Dermatology Flashcards
flesh-colored, pink or yellow-brown lesion with a rough sandpaper feel
AK
white waxy lump or a brown scaly patch, raised pearly and rolled borders, telangiectasis, a central ulcer
BCC
Nikolsky negative
no mucous membrane involvement
large, tense bullae and crusts
bullous pemphigoid
Tx of bullous pemphigoid
Systemic corticosteroids
Linear deposition of IgG Abs against hemidesmosomes
bullous pemphigoid
pain, erythema, warmth, and swelling. Margins are flat and not well demarcated.
cellulitis
Tx of mild cellulitis
cephalexin or dicloxacillin
PO Tx options for MRSA…
Bactrim DS 1 tab PO BID
Clindamycin 300-450 mg PO
doxycycline 100 mg PO BID
well-demarcated erythema, erosions, vesicles
identifiable exposure
contact dermatitis
Pruritic, eczematous lesions
xerosis (dry skin), and lichenification
Most common on flexor creases
atopic dermatitis
Tx of seborrheic dermatitis
ketoconazole shampoo
Young women. Papulopustular, plaques, and scales around the mouth.
perioral dermatitis
Tx of perioral dermatitis
topical metronidazole
pruritic vesicular eruption comprised of clear, deep-seated vesicles without erythema erupting on the lateral aspects of fingers, the central palm, and plantar surfaces
“tapioca pudding”
dyshidrosis
Tx of disydrosis…
topical steroids
acute, well-demarcated, raised superficial bacterial skin infection with lymphatic involvement almost always caused by Streptococcus pyogenes
erysipelas
Tx of erysipelas…
Pen G
Skin lesions predominantly involving the extremities (hands, feet, and mucosa). Target-like shape, raised, blanching, and lack of itchiness
Type IV hypersensitivity to HSV
Erythema multiforme
maculopapular, brick red rash on face beginning at hairline then progressing to palms and soles
Measles. (+ 4 Cs, Koplik spots)
“3-day rash” pink light-red spotted maculopapular rash first appears on the face, spreads caudally to the trunk and extremities and becomes generalized within 24 hours
Cephalocaudal spread
Rubella
only childhood exanthem that starts on the trunk and spreads to the face
Roseola
Complication of impetigo?
post-strep glomerulonephritis
purplish, itchy, flat-topped bumps. On mucous membranes, such as in the mouth, it forms lacy white patches, sometimes with painful sores
Forms whickham striae (white lines visible in papules)
Lichen planus
Tx of lichen planus…
topical CS
5 Ps of lichen planus?
purple, papule, polygonal, pruritis, planar
thick, leathery, brownish skin caused from repeated scratching…
lichen simplex chronicus
Hyperpigmentation of the sun-exposed areas of the face (cheeks, forehead, nose, and chin)
Appear as dark, irregular, well-demarcated macules/patches,
Melasma
Tx of melasma
usually fades on own
otherwise hydroquinone
pearly papules with central umbilication
Molluscum contagiosum
Tx of molluscum contagiosum
imiquimod, curettage
Tx of nummular eczema…
ultra-high potency topical CS
Tx of onychomycosis…
PO Terbinafine x 6 weeks or 12 weeks (fingers vs toes)
What must be monitored on most oral antifungal regimens?
LFTs
abnormal skin growth located at the tailbone that contains hair and skin
present as a teenager with pain, discomfort and swelling above the anus or near the tailbone that comes and goes
Pilonidal disease
Tx of pilonidal disease…
drainage and removal of cyst
initial herald patch, followed by the development of a diffuse papulosquamous rash. eruption appears with smaller secondary lesions that follow Langer’s lines (cleavage lines) in a Christmas tree-like pattern.
pityriasis rosea
Tx of rosacea…
topical metronidazole
A 20-year-old male with no significant past medical history presents complaining of patchy tanning. He states that he has been out in the sun without a shirt several times. Areas on his chest and back just don’t tan, and he is becoming self-conscious
Tinea versicolor
Tx of tinea versicolor
selenium sulfide 2.5% for 10 minutes x 7-10 days
Tx for vitiligo?
CS, tacrolimus
