A&P/ Congenital Disorder
Provide three main functions of the integumentary system
ANSWER: Sensory function, immunity, temperature regulation, water balance, and excretion of waste products.
RATIONALE: The skin is the largest organ and performs multiple vital homeostatic functions: (1) Sensory: contains receptors for pain, pressure, temperature, and touch. (2) Immunity: physical barrier and contains Langerhans cells (immune surveillance). (3) Temperature regulation: sweat glands, vasodilation/vasoconstriction. (4) Water balance: prevents transcutaneous water loss. (5) Excretion: eliminates urea, salts, and water via sweat.
NURSING CARE: When the skin barrier is compromised (burns, wounds, dermatitis), all five functions are impaired simultaneously. Nursing care must address thermoregulation (warming measures), fluid balance (IV fluids/monitoring output), infection prevention (barrier precautions), sensory assessment, and pain management.
This recessive congenital condition results in little or no melanin production and causes problems with eye development and function.
ANSWER: Albinism.
RATIONALE: Albinism is caused by mutations in genes responsible for melanin biosynthesis. Melanin is critical not only for skin/hair pigmentation but also for proper retinal and optic nerve development. Without melanin, the visual pathways do not develop normally, resulting in nystagmus, photophobia, reduced visual acuity, and strabismus.
NURSING CARE: Teach patients and families sun protection measures: broad-spectrum sunscreen (SPF 50+), protective clothing, hats, and UV-blocking sunglasses. Refer to ophthalmology for vision assessment and corrective strategies. Provide emotional support and connect with albinism support groups. Educate about high skin cancer risk due to absent melanin photoprotection.
This short-term burn complication results from fluid loss through open skin and presents with hypotension, tachycardia, and decreased urine output.
ANSWER: Hypovolemic (burn shock)
RATIONALE: Thermal injury causes massive release of inflammatory mediators (histamine, prostaglandins, cytokines) → systemic capillary leak → fluid shifts from intravascular to interstitial space. Additionally, open wounds result in direct fluid evaporation. This fluid shift is most severe in the first 24 hours post-burn, leading to hypovolemic/distributive shock (burn shock).
NURSING CARE: Administer IV fluid resuscitation using the Parkland formula: 4 mL x weight (kg) x TBSA burned (%) — give first half in 8 hours from time of burn, second half over next 16 hours. Use Lactated Ringer's. Monitor urine output q1h (goal: 0.5 mL/kg/hr in adults; 1 mL/kg/hr in children). Assess for fluid overload (pulmonary edema) — burn resuscitation can overshoot. Insert Foley catheter for accurate monitoring.
This chronic inflammatory skin condition, also known as 'eczema,' may result from an immune system malfunction and presents with red to brownish-grey skin patches and pruritus.
ANSWER: Atopic dermatitis
RATIONALE: Atopic dermatitis is a chronic, relapsing inflammatory skin condition. The exact cause is unknown but involves a combination of immune dysfunction (Th2-skewed immune response, elevated IgE), skin barrier defects (filaggrin gene mutations), and environmental triggers. The impaired barrier allows allergens/irritants to penetrate, triggering inflammation and the itch-scratch cycle.
NURSING CARE: Educate patients on trigger avoidance: harsh soaps, fragrances, extreme temperatures, stress, sweat, and allergens. Teach the 'soak and seal' method: bathe in lukewarm water for 5-10 minutes then immediately apply emollient (within 3 minutes) to seal moisture. Discuss pharmacologic options: topical corticosteroids (short-term), calcineurin inhibitors (Protopic/Elidel), and biologic therapy (dupilumab for moderate-severe). Monitor for secondary skin infection (S. aureus).
Several cafe au lait spots larger than a quarter may be a sign of this systemic genetic condition.
ANSWER: Neurofibromatosis
RATIONALE: Cafe au lait spots are hyperpigmented flat macules caused by clusters of melanin-producing cells. Six or more cafe au lait spots larger than a quarter (>1.5 cm post-puberty) is one of the diagnostic criteria for Neurofibromatosis Type 1 (NF1), an autosomal dominant disorder affecting the nervous system, bone, and skin.
NURSING CARE: Educate families that a single cafe au lait spot is common and benign, but multiple large spots warrant genetic evaluation. Assess and document the number and size of spots. If NF1 is suspected, refer to genetics and neurology. Provide education about the progressive nature of NF1 and monitor for associated complications (scoliosis, learning disabilities, hypertension).
The assessment tool to assess pressure injury
ANSWER: Norton Scale and Braden Scale
RATIONALE:
The Braden Scale is the most widely used, assessing 6 subscales: sensory perception, moisture, activity, mobility, nutrition, and friction/shear. Each subscale scored 1-4 (except friction/shear, scored 1-3), maximum 23 points. Score ≤18 = at risk. Subscale scores help identify which specific interventions are needed. The Norton Scale assesses physical condition, mental condition, activity, mobility, and incontinence. Both tools guide individualized prevention plans.
NURSING CARE: Perform Braden Scale assessment on admission and with any change in condition. Document score and corresponding interventions. A Braden score of 18 or below triggers pressure injury prevention protocol: implement 2-hour repositioning schedule, pressure-redistributing surfaces, moisture barriers, nutritional consultation, and heel protection. Reassess with every shift and document interventions. Share Braden score findings with interdisciplinary team.
The integumentary changes with aging. Provide three age-related considerations/alterations with aging (often increase risk of injury in the elderly)
ANSWER: Decreased elasticity, integrity, and moisture; decreased sensations of pain, vibration, cold, heat, pressure, and touch; and lentigos appearing in sun-exposed areas.
RATIONALE: Aging skin undergoes multiple structural changes: reduced collagen production → decreased elasticity/strength; sebaceous gland hypofunction → dry skin; subcutaneous fat loss → reduced cushioning/insulation; reduced sensation → increased fall and burn risk; fragile dermal vessels → easy bruising (senile purpura). These changes collectively increase vulnerability to skin tears, pressure injuries, and delayed wound healing.
NURSING CARE: Use the Braden Scale to assess pressure injury risk in older adults. Implement skin protection measures: gentle repositioning, pressure-redistributing surfaces, moisture barriers for incontinence, and protective padding for bony prominences. Use pH-balanced skin cleansers. Apply moisturizers daily to reduce skin breakdown risk.
This rare congenital condition is characterized by small patchy areas of hypopigmentation of the skin, hair, mucous membranes, and retina.
ANSWER: Vitiligo
RATIONALE: Vitiligo involves destruction or dysfunction of melanocytes, leading to focal, segmental, or generalized depigmentation. The exact cause is unknown but autoimmune mechanisms are strongly implicated. It can affect any area including mucous membranes, hair follicles, and the retina. It is not contagious.
NURSING CARE: Provide sun protection education since depigmented areas lack UV protection. Discuss available treatments: CONNOT BE CURED -- phototherapy (narrowband UVB), pharmacotherapy (topical tacrolimus, corticosteroids), skin grafting, and autologous melanocyte transplant. Address psychosocial impact — vitiligo significantly affects self-image and quality of life, especially in individuals with darker baseline skin tones.
This pressure injury stage involves full-thickness skin and subcutaneous tissue loss with exposed fat but no exposed bone, tendon, or muscle.
ANSWER: Stage 3 pressure injury
RATIONALE: Stage 1 (non-blanchable erythema, intact skin), Stage 2 (partial-thickness loss, shallow open ulcer or blister), Stage 3 (full-thickness loss, fat may be visible, may have tunneling/undermining), Stage 4 (full-thickness with exposed bone/tendon/muscle), Unstageable (depth cannot be determined due to slough/eschar), Deep Tissue Injury (purple/maroon discoloration of intact skin).
NURSING CARE: Stage 3 injuries require wound care consult. Use appropriate moisture-retentive dressings. Implement pressure redistribution (specialty mattress, heel offloading boots). Reposition every 2 hours. Optimize nutrition (protein 1.2–1.5 g/kg/day, supplemental Vitamin C and zinc). Complete SKIN bundle documentation. Assess for tunneling and undermining with each dressing change.
Raised erythematous welts that blanch with pressure and are accompanied by pruritus. The medical term for these is 'hives.'
ANSWER: Urticaria
RATIONALE: Urticaria results from mast cell degranulation releasing histamine and other mediators into the superficial dermis. This causes local vasodilation and increased vascular permeability, producing the characteristic wheal (swelling) and flare (erythema). Causes include Type I IgE-mediated hypersensitivity reactions, emotional stress, cold, heat, and idiopathic triggers.
NURSING CARE: Monitor respiratory status closely — urticaria can rapidly progress to angioedema (deeper tissue swelling) and anaphylaxis (laryngeal edema, bronchospasm, hypotension). Have epinephrine (EpiPen or 1:1000 IM) immediately available. Administer antihistamines (cetirizine, diphenhydramine) and corticosteroids as ordered. Educate patient to avoid hot baths/showers (which worsen vasodilation) and known triggers. Identify and remove causative agent.
This term describes the partial or complete separation of wound edges after surgical closure.
ANSWER: Wound Dehiscence
RATIONALE: Dehiscence occurs when wound layers separate. Risk factors include obesity, infection, poor nutrition (low albumin/protein), diabetes, steroid use, and excessive tension on wound edges. It commonly presents 5–8 days post-op.
NURSING CARE: Cover open wound with sterile saline-moistened dressing. Keep patient calm and in low-Fowler's position. Do NOT attempt to close the wound. Notify surgeon immediately. If evisceration occurs, cover bowel with sterile moist saline gauze — this is a surgical emergency.
This rapid body surface area estimation method divides the adult body into sections of 9% each (or multiples of 9%) to estimate the total body surface area burned.
ANSWER: The Rule of Nines
RATIONALE: Rule of Nines (adults): Head and neck = 9%, Each arm = 9%, Each thigh = 9%, Each lower leg = 9%, Anterior trunk = 18%, Posterior trunk = 18%, Perineum/genitalia = 1%. Total = 100%. In CHILDREN: head = 18%, each leg = 14% (Lund-Browder chart preferred for children). Only count partial and full-thickness burns. The palm of the patient's hand (including fingers) = approximately 1% BSA (useful for scattered burns).
NURSING CARE: Accurately calculate TBSA only using partial-thickness and full-thickness burns — superficial (1st degree) burns NOT included. Overestimation leads to excessive fluid resuscitation and complications (pulmonary edema, abdominal compartment syndrome). Underestimation leads to burn shock. Document burn diagram and TBSA in chart. Refer to burn center if: >20% TBSA, full-thickness burns, face/hands/feet/genitalia involvement, or inhalation injury.
This excessive collagen deposition scar type extends BEYOND the original wound margins and continues to grow over time, unlike hypertrophic scars which remain within wound boundaries.
ANSWER: Keloid scar
RATIONALE: Keloids result from dysregulated fibroblast activity producing excessive Type I and III collagen. They are more common in people with darker skin tones (African, Hispanic, Asian descent) and tend to occur on earlobes, chest, shoulders, and upper back. Unlike hypertrophic scars, keloids do not regress spontaneously and are prone to recurrence after excision.
NURSING CARE: Prevention is key in keloid-prone patients: use silicone gel sheets or silicone scar gel after wound closure. Refer to plastic surgery or dermatology for intralesional corticosteroid injections, laser therapy, or pressure garments. Educate patients that piercing and elective surgery carries keloid risk. Avoid unnecessary wound manipulation.
This pigmented birthmark consists of a cluster of pigment cells and should be monitored for cancerous changes using the ABCDE criteria.
ANSWER: Moles (melanocytic nevi)
RATIONALE: Moles (melanocytic nevi) are benign collections of melanocytes. While most remain benign throughout life, atypical moles (dysplastic nevi) have elevated malignant potential. The ABCDE criteria for melanoma surveillance: Asymmetry, irregular Border, uneven Color (multiple shades), Diameter >6mm, and Evolving (changing in size, shape, or color).
NURSING CARE: Educate patients to perform monthly self-skin exams using a mirror to view hard-to-see areas. Advise annual full-body dermatological examination for patients with multiple moles or family history of melanoma. Teach ABCDE criteria. Emphasize that early detection drastically improves melanoma prognosis. Document number and location of moles in patient records for comparison.
This burn complication caused by organisms gaining entry through compromised skin can trigger a massive inflammatory response and spread to the bloodstream.
ANSWER: Sepsis
RATIONALE: The skin is the body's primary barrier against infection. Burns destroy this barrier, creating a large portal of entry for pathogens. Burn wound sepsis typically develops after 72 hours (once wound becomes colonized). The hypercatabolic/immunocompromised state of burn patients reduces their ability to fight infection. Sepsis is the leading cause of death in burn patients after the first 72 hours.
NURSING CARE: Implement reverse isolation (protective environment for burn patients). Perform wound care with aseptic technique. Apply topical antimicrobials (silver sulfadiazine, mafenide acetate, silver-impregnated dressings). Monitor daily for infection signs: fever, wound odor, change in wound color, increasing pain, leukocytosis. Obtain wound cultures routinely per protocol. Sepsis bundle if sepsis suspected: blood cultures x2, IV antibiotics, fluid resuscitation.
This acute inflammatory skin reaction is triggered by direct contact with an irritant (chemicals, soaps, body fluids) or allergen (substances causing immune sensitization)
ANSWER: Contact dermatitis
RATIONALE: Irritant contact dermatitis occurs when chemicals directly damage skin cells without prior sensitization — onset is rapid and localized to the contact area. Allergic contact dermatitis is a Type IV (delayed) hypersensitivity reaction requiring prior sensitization — onset is 24-72 hours after re-exposure. Common allergens: nickel, latex, fragrance, preservatives, and henna (PPD).
NURSING CARE: The priority intervention is identifying and removing the causative agent. Apply cool, wet compresses to relieve pruritus and inflammation. Educate patients to avoid scratching (worsens inflammation, increases infection risk). Administer topical or systemic anti-inflammatory agents as ordered. For healthcare workers, assess for latex allergy and ensure latex-free environment for sensitized patients. Recommend allergy testing if allergen is unidentified.
These are the three main types of skin cancer discussed in the Chapter 13 chapter.
ANSWER: Basal cell carcinoma, squamous cell carcinoma, and melanoma
RATIONALE: Basal cell carcinoma (BCC) originates from basal keratinocytes — it is the most common (80% of skin cancers) but rarely metastasizes; appears as pearly papule with rolled border and telangiectasia. Squamous cell carcinoma (SCC) originates from keratinocytes — second most common; presents as erythematous scaling plaque or ulcerated nodule; can metastasize, especially in immunocompromised. Melanoma originates from melanocytes — least common but most deadly; New or changing mole (ABCDE); often dark or multicolored, can be flat or raised; high metastatic potential; early detection dramatically improves survival
NURSING CARE: Educate patients to recognize each type: BCC (pearly, shiny, rolled edges — often on face); SCC (red, scaly, ulcerated — often on sun-exposed areas, lips, ears); melanoma (pigmented lesion with ABCDE changes). Refer any suspicious lesion urgently to dermatology for biopsy — no treatment decision should be made on clinical appearance alone. Assist patients through the biopsy and diagnosis process, providing emotional support and clear information about treatment options.
The acronym used to assess suspicious moles or skin lesions for early detection of melanoma.
ANSWER: ABCDE: Asymmetry, Border irregularity, Color variation, Diameter >6 mm, and Evolving.
RATIONALE: The ABCDE criteria were developed by the American Academy of Dermatology to help both clinicians and patients identify melanomas at an early, treatable stage. Melanoma's disorganized, malignant growth results in asymmetry, irregular borders, multiple pigment colors, large diameter, and change over time — all contrasting with the symmetric, well-bordered, uniform color of benign nevi. The 'Evolving' criterion is particularly important as any change in a mole is a red flag.
NURSING CARE: Teach ABCDE criteria to all patients, especially those with multiple moles, fair skin, family history of melanoma, or significant sun exposure history. Encourage monthly self-skin exams. Advise patients to photograph moles and compare periodically. Refer any lesion meeting one or more ABCDE criteria to dermatology promptly. Emphasize that early detection of melanoma dramatically improves survival odds (99%+ survival for Stage 1 vs. ~30% for Stage 4).
This treatment for vitiligo involves surgically transplanting the patient's own melanocytes from normal pigmented skin to depigmented areas.
ANSWER: Autologous melanocyte transplant (autologous melanocyte grafting)
RATIONALE: Autologous melanocyte transplant involves harvesting melanocytes from the patient's own normally pigmented skin, culturing/expanding them, and transplanting them to depigmented patches. It avoids immune rejection (autologous = same patient). It is most effective for stable, localized vitiligo when phototherapy has failed. It is not appropriate for active/spreading vitiligo.
NURSING CARE: Post-procedure nursing care includes wound care for the donor site, UV protection for the transplanted area during healing, and patient education on expected timeline (repigmentation takes months). Set realistic expectations: results are variable and may require repeat procedures. Emphasize that new depigmented areas cannot be treated until the disease is stable.
This life-threatening bacterial skin infection involves rapid destruction of soft tissue, fascia, and sometimes muscle, and is diagnosed by the presence of crepitus (gas in tissue), disproportionate pain, and 'woody' induration.
ANSWER: Necrotizing fasciitis
RATIONALE: Necrotizing fasciitis is caused by a mixed polymicrobial synergy (Type I) or by Group A Streptococcus alone (Type II). Bacteria produce toxins and enzymes that cause widespread tissue necrosis and thrombosis of blood vessels, leading to rapidly advancing tissue death. The 'disproportionate pain' (severe pain out of proportion to skin appearance) is a key early warning sign before extensive external skin changes are visible. Crepitus indicates gas-producing bacteria (Clostridium).
NURSING CARE:
This is a surgical emergency — immediate notification of surgeon for emergency debridement. Establish IV access, begin aggressive fluid resuscitation. Administer broad-spectrum antibiotics STAT (piperacillin-tazobactam + clindamycin + vancomycin). Monitor for septic shock. Prepare patient for surgical debridement, possible amputation, and hyperbaric oxygen therapy. Provide intensive wound care post-debridement. Alert family to severity and rapid progression.
A patient is rescued from a house fire with suspected smoke inhalation, facial burns, singed nasal hairs, a hoarse voice, and carbonaceous sputum. The pulse oximeter reads 95%. Provide 2 PRIORITY interventions that must occur quickly to prevent deterioration of the condition of this client
ANSWER: (1) Airway: IMMEDIATE intubation — hoarse voice = impending airway loss; edema will worsen over hours and close the airway. (2) O2: 100% via ETT (treats CO — SpO2 is falsely normal with CO poisoning). (3) IV access and fluid resuscitation. (4) Co-oximetry ABG (true COHb level). (5) Assess TBSA and apply Parkland formula. (6) Monitor continuously: cardiac (dysrhythmias), urine output, respiratory status. (7) Wound care/reverse isolation. (8) Consider bronchoscopy for airway assessment.
RATIONALE: This patient has the classic presentation of inhalation injury: facial burns (upper airway exposure), singed nasal hairs (heat exposure), hoarse voice (glottic/supraglottic edema beginning), carbonaceous sputum (lower airway exposure), and the deceptively normal SpO2 (CO poisoning masked by pulse oximetry). Hoarse voice in a burn/smoke inhalation patient is a critical emergency — airway edema progresses rapidly and intubation becomes impossible once edema fully develops. There is NO time for watchful waiting.
NURSING CARE: Call for anesthesia/airway team immediately upon identifying hoarse voice. Prepare rapid sequence intubation medications (succinylcholine/rocuronium, ketamine/etomidate). Have surgical airway kit at bedside. Once intubated: apply 100% FiO2, lung-protective ventilation (6 mL/kg IBW, PEEP 5-8, plateau <30 cmH2O). Frequent suction for carbonaceous secretions. Obtain COHb level urgently. Begin Parkland formula fluids. Insert Foley catheter. Alert burn center for transfer. Document exact timeline of all interventions.
This mite infestation causes intense erythema and pruritus and is treated with topical agents. What additional element of treatment is required beyond topical application to the patient?
ANSWER: Scabies, caused by Sarcoptes scabiei mites. In addition to topical treatment of the patient (permethrin cream or ivermectin), clothing, linens, and other fabrics must also be treated/laundered in hot water to eradicate mites.
RATIONALE: Scabies mites burrow into the stratum corneum to lay eggs. The intense pruritus (worse at night) results from a delayed hypersensitivity reaction to mite proteins, eggs, and feces. The mites can survive off the host for 24-36 hours, making environmental decontamination essential. All household contacts and sexual partners should be treated simultaneously to prevent re-infestation.
NURSING CARE: Apply permethrin 5% cream from neck down (including under fingernails), leave on 8-14 hours, rinse. Repeat in 1 week. Treat all household contacts simultaneously even if asymptomatic. Launder all clothing, bedding, and towels in hot water (>50°C/122°F) and dry on high heat. Non-washable items can be sealed in plastic bags for 72 hours. Educate that pruritus may persist 2-4 weeks after successful treatment (allergic reaction to dead mites/eggs).
Tinea corporis is he medical name for this superficial infection. It presents as a circular, erythematous, pruritic rash with a central clearing. What is the commonly known name of this skin alteration?
ANSWER: Tinea corporis.
RATIONALE: Tinea infections (dermatophytoses) are caused by dermatophyte fungi (Trichophyton, Microsporum, Epidermophyton) that infect only keratinized tissue (skin, hair, nails). Tinea corporis affects the body trunk/extremities. Other types: tinea capitis (scalp), tinea pedis (athlete's foot), tinea unguium (nails/onychomycosis). The characteristic 'ringworm' appearance results from centrifugal spread with central clearing as the immune system partially controls the infection.
NURSING CARE: Assess for other tinea infections simultaneously (feet, groin, scalp, nails). Apply topical antifungal agents (clotrimazole, terbinafine) as directed — usually for 2-4 weeks, continuing 1 week after clearing to prevent relapse. Educate on hygiene: keep affected areas dry, avoid sharing personal items, wear breathable clothing. If systemic antifungals (griseofulvin, terbinafine) are prescribed, educate on hepatotoxicity monitoring.
RISK FACTOR: Pets or being outdoors
A patient came in with a bacterial infection. The nurse has administered the cleint's prescribed antibiotic. The nurse reassess the client 15 minutes after administration.The patient presents with severe urticaria who is developing angioedema and stridor. What is he nurse's priority action?
ANSWER: Airway management — the immediate priority is assessing and maintaining the patient's airway. Stridor indicates impending laryngeal obstruction. Call for emergency help and administer IM epinephrine immediately.
RATIONALE: Anaphylaxis with angioedema can progress to complete airway obstruction within minutes. Stridor (high-pitched inspiratory sound) indicates laryngeal edema — the airway is critically narrowed. This is an immediately life-threatening emergency. Epinephrine (IM, lateral thigh) is the only medication that can rapidly reverse laryngeal edema. Antihistamines alone are insufficient — they are too slow and do not reverse severe angioedema.
NURSING CARE: Emergency response in order: (1) Activate emergency response system (call a code). (2) Administer epinephrine 0.3-0.5 mg IM lateral thigh immediately — do not delay for IV access. (3) Position patient sitting upright if tolerated (facilitates breathing). (4) Apply high-flow oxygen. (5) Establish IV access. (6) Prepare for intubation — stridor may deteriorate. (7) Administer diphenhydramine, corticosteroids as adjuncts. (8) Monitor q5 minutes. Biphasic anaphylaxis can occur — observe patient for minimum 4-6 hours after epinephrine.
Compare and contrast the three types of vascular birthmarks — macular stains, hemangiomas, and port wine stains — in terms of appearance.
ANSWER: Macular stains: flat/pink, fetal capillary dilation, fade by age 1-2 (nuchal persist), no treatment needed. Hemangiomas: raised/red, proliferating vessels, grow then involute by age 5-10, monitor for complications (propranolol for large lesions). Port wine stains (stork bites): flat/dark red-purple, capillary malformation, permanent/darken with age, pulsed dye laser treatment, assess for Sturge-Weber.
RATIONALE: Understanding the distinct pathophysiology of each vascular birthmark guides correct management: salmon patches (passive capillary dilation, resolves passively), hemangiomas (active angiogenesis/proliferation, requires intervention only if complicated), port wine stains (fixed capillary malformation, requires laser and neurological surveillance). Misidentification leads to inappropriate management — e.g., treating a salmon patch as a port wine stain or failing to assess a facial port wine stain for Sturge-Weber.
NURSING CARE: Accurate visual identification and documentation at birth is the foundational nursing intervention. Provide anticipatory guidance tailored to each type: reassurance for salmon patches, growth monitoring for hemangiomas, and neurological/ophthalmological referral for facial port wine stains. Update documentation at each well-child visit. Support parents through the emotional experience of visible birthmarks.
This superficial bacterial skin infection commonly seen in children presents with honey-colored crusted lesions, typically around the nose and mouth.
ANSWER: Impetigo
RATIONALE: Impetigo is caused by Staphylococcus aureus (most common) or Streptococcus pyogenes. It presents in two forms: non-bullous (honey-colored crusts after rupture of vesicles/pustules) and bullous (large, thin-walled blisters caused by staphylococcal exfoliative toxin). It is highly contagious via direct contact and is common in school-age children, especially in warm/humid conditions.
NURSING CARE: Implement contact precautions. Educate on strict hand hygiene, avoid sharing towels/clothing. Administer topical mupirocin (localized) or oral antibiotics (widespread/systemic). Remove crusts gently with warm water compresses before applying topical antibiotics to improve penetration. Educate parents to keep child home from school/daycare until 24 hours after starting antibiotics. Monitor for post-streptococcal complications (glomerulonephritis) if Streptococcal cause is suspected.
This long-term burn complication is a type of skin cancer (Marjolin's ulcer) that can develop in chronic burn scars. What type of cancer is it?
ANSWER: Squamous cell carcinoma (SCC)
RATIONALE: Marjolin's ulcer is a rare but aggressive malignant transformation occurring in chronic burn scars, chronic wounds, or areas of radiation damage. It typically develops 10-35 years after the initial injury (average latency ~30 years). The chronic inflammation, scar hypoxia, and impaired immune surveillance in scar tissue predispose to SCC development. It is often aggressive, with a higher rate of metastasis than typical SCC because the avascular scar tissue limits immune surveillance.
NURSING CARE: Educate burn survivors about the lifelong risk of malignant transformation in burn scars. Advise regular dermatological surveillance. Instruct patients to report any new growth, ulceration, or non-healing area within a scar. Marjolin's ulcers often go unnoticed because they are painless (in areas of sensory nerve destruction). Early biopsy of any suspicious change in a burn scar is critical for early detection.
This chronic progressive inflammatory skin condition primarily affects the face and causes erythema and telangiectasia (visible dilated blood vessels).
ANSWER: Rosacea
RATIONALE: Rosacea is a chronic inflammatory skin condition of unknown etiology affecting primarily fair-skinned individuals over age 30. The four subtypes are: erythematotelangiectatic (facial redness, visible vessels), papulopustular (acne-like papules/pustules), phymatous (skin thickening, especially nose — rhinophyma), and ocular (eye involvement — redness, dryness, styes). Trigger-induced vasodilation → chronic vascular instability → inflammation → progressive skin changes.
NURSING CARE: Educate on trigger identification and avoidance: sun exposure, spicy foods, alcohol, hot beverages, extreme temperatures, stress, strenuous exercise. Daily sun protection (SPF 30+ broad-spectrum). Discuss treatment options: topical metronidazole/azelaic acid, oral antibiotics (doxycycline for inflammation), laser for telangiectasia. Emphasize there is NO cure but symptoms can be managed. Address cosmetic and psychological impact of chronic visible redness on quality of life.
This chronic skin condition occurs when pores become clogged with oil, debris, or bacteria and can become inflamed, developing into pustules, nodules, or cysts.
ANSWER: Acne vulgaris
RATIONALE: Acne vulgaris involves four key pathological processes: (1) Excess sebum production (sebaceous hyperactivity driven by androgens), (2) Follicular hyperkeratosis (abnormal keratinocyte shedding plugging the follicle), (3) Colonization by Cutibacterium acnes (formerly P. acnes), and (4) Inflammatory response to C. acnes antigens. This produces a spectrum of lesions: open comedones (blackheads), closed comedones (whiteheads), papules, pustules, nodules, and cysts.
NURSING CARE: Educate patients on gentle skin care: cleanse with mild soap twice daily, avoid scrubbing (increases irritation), avoid touching/picking/squeezing (increases inflammation and scarring risk), keep hair clean and off face, avoid oily cosmetics. Set realistic expectations — most treatments take 6-12 weeks to show results. Discuss medication options: benzoyl peroxide (OTC, kills C. acnes), topical retinoids (unclogs pores), antibiotics (reduce bacterial load). Refer to dermatology for nodular/cystic acne or if OTC treatments fail.
When assessing a patient with herpes zoster, this clinical finding is the key diagnostic feature that differentiates it from other rashes.
ANSWER: Dermatomal distribution — the rash is unilateral and follows the distribution of a single sensory nerve dermatome
RATIONALE: Herpes zoster virus reactivates in a single dorsal root ganglion and travels down the sensory nerve to the skin surface — producing a rash confined to the corresponding dermatome. The strictly unilateral (never crosses the midline in typical cases) and dermatomal pattern is pathognomonic. Common dermatomes affected: thoracic (T3-T12, 'shingles' around the chest/abdomen), trigeminal (V1 — forehead/eye; risk of keratitis), and lumbosacral.
NURSING CARE: Implement contact AND airborne precautions until all lesions are crusted and dry (the virus can spread varicella to non-immune contacts). Assess the specific dermatome involved: trigeminal V1 involvement (forehead, nose, eye) → immediate ophthalmology referral (Hutchinson's sign — herpes on the tip of the nose predicts ocular involvement). Assess for and manage post-herpetic neuralgia risk (older adults, severe acute pain = higher PHN risk). Antivirals within 72 hours of rash onset significantly reduce PHN risk.