Viral & Bacterial Skin Infections
This virus causes benign epidermal neoplasms known as common warts.
Answer: What is Human Papillomavirus (HPV)?
Dermatophyte infection of the body that presents as an annular lesion with central clearing.
Answer: What is tinea corporis?
Chronic inflammatory skin disease characterized by silvery scales and erythematous plaques.
Answer: What is psoriasis?
Clue: The most common skin cancer, often described as pearly or waxy with rolled borders.
Answer: What is basal cell carcinoma?
Clue: Hypersensitivity reaction characterized by erythema, pruritus, and edema after allergen exposure.
Answer: What is an allergic reaction?
Clue: The most common presentation of anthrax, accounting for ~95% of cases, begins as a papule and progresses to a black eschar.
Answer: What is cutaneous anthrax?
The most common cause of tinea pedis in adults.
Answer: What is Trichophyton rubrum?
Clue: Removal of scales in psoriasis causes pinpoint bleeding known as this sign.
Answer: What is the Auspitz sign?
Clue: Rough, scaly lesions on sun-exposed skin that can progress to squamous cell carcinoma.
Answer: What is actinic keratosis?
Clue: First step in management of an insect sting.
Answer: What is removal of the stinger?
First-line treatment for suspected anthrax exposure includes this antibiotic.
What is ciprofloxacin or doxycycline?
This fungal infection causes hypo- or hyperpigmented macules on the trunk and is caused by Malassezia furfur.
Answer: What is tinea versicolor?
Clue: This rash begins with a “herald patch” and follows cleavage lines in a Christmas-tree pattern.
Answer: What is pityriasis rosea?
Clue: The most lethal skin cancer, often evaluated using the ABCDE criteria.
Answer: What is malignant melanoma?
Clue: Older adults commonly experience this condition caused by dry skin leading to intense itching.
Answer: What is senile pruritus?
This viral infection presents with grouped vesicles along a dermatomal distribution and is often preceded by pain.
Answer: What is herpes zoster (shingles)?
First-line treatment for tinea versicolor includes this topical agent commonly used as a shampoo or lotion.
Answer: What is selenium sulfide?
Clue: Psoriasis may be the first clinical manifestation of this systemic disease.
Answer: What is HIV infection?
Clue: A skin cancer that commonly arises from actinic keratoses and may metastasize.
Answer: What is squamous cell carcinoma?
Clue: Local and systemic reactions from insect stings may require this class of medications.
Answer: What are antihistamines or corticosteroids?
Adults ≥50 years should receive this recombinant vaccine to prevent shingles, given as a two-dose series.
Answer: What is Shingrix?
Persistent fungal infection of the nails requiring oral therapy with terbinafine or itraconazole.
Answer: What is onychomycosis (tinea unguium)?
Clue: Purple, pruritic, polygonal, flat-topped papules often affecting wrists and oral mucosa describe this condition.
Answer: What is lichen planus?
Clue: “Stuck-on,” waxy brown or black plaques in older adults describe this benign lesion.
Answer: What is seborrheic keratosis?
Clue: Tissue damage from cold exposure requiring rewarming and pain control is known as this condition.
Answer: What is frostbite?