Dermatology Exam 2025
Major function of skin - Correct Ans-Boundaries, protection, modulate temperature,
synthesize vitamin D
Epidermis - Correct Ans-Horny epithelial layer seen on outside
Dermis - Correct Ans-Epithelial layer containing blood vessel, hair follicles. Nourishes
epidermis
Subcutaneous Tissue - Correct Ans-Epithelial layer containing fat, arteries, veins
Vellus hair - Correct Ans-short, fine, less pigmented hair
Terminal hair - Correct Ans-Coarser, pigmented hair (scalp/eye brows)
Lunugo - Correct Ans-fine, thin, tufty, soft hair associated with malnourishment
Sebaceous glands - Correct Ans-Present on all surfaces except palms/soles. Produce a
fatty substance secreted onto skins surface through hair follicles
Eccrine glands - Correct Ans-Type of sweat gland; widely distributed, open directly onto
skin, help control body temperature
Apocrine gland - Correct Ans-Type of sweat gland; found in axilla and groin, triggered
by emotional stress
Linear lesions - Correct Ans-lesions configured in a straight line (ex. poison ivy)
Annular lesions - Correct Ans-lesions configured in rings with central clearing (ex. tinea
corporis)
Nummular lesions - Correct Ans-circular or coinshaped lesion configuration
Target (bull's eye) lesions - Correct Ans-lesions configured in rings with central
duskiness (ex. erythema multiforme)
Reticulated lesions - Correct Ans-lesions configured in a lacy or networked pattern (ex.
livedo reticularis)
Herpetiform lesions - Correct Ans-lesions configured in group papules or vesicles like
herpes simplex (ex. herpes simplex)
Zosteriform lesions - Correct Ans-lesions configured in clusters with a dermatomal
distribution
DERMATOLGY
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Verrucous - Correct Ans-irregular, pebbly, or rough texture (ex. warts)
Lichenification - Correct Ans-thickening of the skin with accentuation of normal skin
markings resulting from repeated scratching or rubbing; bark-like
Induration - Correct Ans-Deep thickening of the skin; skin has a hard resistant feeling
(ex. celulitis)
Xanthomas - Correct Ans-yellowish, waxy lesions, usually benign; idiopathic (ex. lipid
disorder)
Umbilicated - Correct Ans-central indentation of a lesion, usually viral (ex. molluscum
contagiosum)
Nikolsky sign - Correct Ans-epidermal exfoliation with lateral pressure (ex. TEN,
pemphigus vulgaris)
Auspitz sign - Correct Ans-pinpoint bleeding after a scale is removed from a plaque (ex.
psoriasis)
Koebner phenomenon - Correct Ans-development of lesions in areas of trauma (ex.
psoriasis, lichen planus)
Macule - Correct Ans-flat, non-palpable, <1cm in diameter (ex. freckles, port win stains)
Patch - Correct Ans-large macule, >1cm
Papule - Correct Ans-elevated or raise, usually <1cm; can be rounded, flat-topped,
and/or umbilicated; caused by proliferation of cells in the epidermis or superficial dermis
(ex. warts, insect bites)
Plaques - Correct Ans-palpable, elevated, >1cm, caused by proliferation of epidermal
and superficial dermal cells (ex. psoriasis)
Nodules - Correct Ans-Firm papules that extend into the epidermis, dermis, or
subcutaneous tissue; caused by proliferation of mid to deep dermal cells (ex. lipomas,
cysts)
Vesicles - Correct Ans-Small, fluid-filled lesions; blisters; usually <1cm in diameters (ex.
herpes)
Bullae - Correct Ans-Large, fluid-filled vesicles or blisters, >1cm in diameter (ex. burns,
allergic contact dermatitis, insect bites)
Pustules - Correct Ans-Vesicles that contain pus; usually infected (ex. folliculitis, acne)
DERMATOLGY