Infectious
What is the most common pathogen in Erysipelas?
Streptococcus Pyogenes
True or False: Intralesional steroids and topical steroids have similar efficacy in treating alopecia areata?
False
True or False: Darker skin types are more prone to Melasma?
True
In what layer of the skin can the base of the hair follicle be found?
Dermis
True or False: UV Phototherapy is an effective treatment for vitiligo?
True: Narrowband UVB or UVA is considered 2nd line in the treatment of vitiligo.
What is the most common cause of Guttate Psoriasis?
Streptococcal infection (eg. strep throat)
True or False: In infants, atopic dematitis (eczema) is most commonly found on the cheeks, scalp, and flexor surfaces?
False: Cheeks, scalp, and EXTENSOR surfaces
What are the only two FDA approved medications for androgenic alopecia (include standard dosages)?
Minoxidil 2%/5% and Finasteride 1 mg
Name the ABCDE criteria for melanoma?
Asymmetry, border, color, diameter (>0.6 mm) and evolving
Name 1 high potency (Class II-III) steroid?
Fluocinonide 0.05%, Betamethasone dipropionate 0.05%, Mometasone furoate 0.1% ointment
Which two HPV types are most commonly responsible for genital warts?
HPV 6 & 11 linked to 90% of cases.
Ketoconazole, selenium sulphide (Selsun Blue), Zinc pyrithione (Head & Shoulders).
What feature is commonly used to distinguish alopecia areata from trichotillomania?
Exclamation point hairs (broken hair shafts near the scalp
What is generally regarded as the cutoff diameter between a papule and a nodule?
Papule <0.5 cm, nodule >0.5 cm
Name 4 different antibiotics that can be used to cover MRSA skin infections?
Linezolid, TMP-SMX, Doxycycline, Clindamycin
List 2 different features that distinguish nail psoriasis from onychomycosis?
Nail Psoriasis can have denting/pitting, grooving (Beau's lines), thinning, splinter hemorrhages, separation from nail bed.
Which genus of fungi is commonly associated with seborrheic dermatitis?
Malassezia
Which enzyme is responsible for reducing testosterone to dihydrotestosterone (DHT); the form believed to contribute androgenic alopecia?
5α-Reductase
What is the function of a Merkel cell? Where can this cell be found?
Light touch and tactile sensation. Found in the epidermis.
Which topical antibiotic is widely used in the treatment of rosacea?
Metronidazole
What colour does Trichophyton fluoresce under the Wood's Lamp?
It does not fluoresce under Wood's Lamp
Name 2 different medications/medication classes that are associated with Psoriasis?
Beta-blockers, Lithium
Which medication is associated with Melasma as a side effect?
Phenytoin. Typically occurs in about 10% of patients.
List 5 key functions of the skin?
Protection, sensation, water regulation, storage, Vitamin D synthesis, excretion, Aesthetic and social functions.
Name 3 different antifungal medications that are available in IV form for treatment of systemic fungal infections?
Amphotericin B, Voriconazole, Itraconazole