Dermatology

Question 1

flesh-colored, pink or yellow-brown lesion with a rough sandpaper feel

Answer 1

AK

Question 2

white waxy lump or a brown scaly patch, raised pearly and rolled borders, telangiectasis, a central ulcer

Answer 2

BCC

Question 3

Nikolsky negative

no mucous membrane involvement

large, tense bullae and crusts

Answer 3

bullous pemphigoid

Question 4

Tx of bullous pemphigoid

Answer 4

Systemic corticosteroids

Question 5

Linear deposition of IgG Abs against hemidesmosomes

Answer 5

bullous pemphigoid

Question 6

pain, erythema, warmth, and swelling. Margins are flat and not well demarcated.

Answer 6

cellulitis

Question 7

Tx of mild cellulitis

Answer 7

cephalexin or dicloxacillin

Question 8

PO Tx options for MRSA…

Answer 8

Bactrim DS 1 tab PO BID

Clindamycin 300-450 mg PO

doxycycline 100 mg PO BID

Question 9

well-demarcated erythema, erosions, vesicles

identifiable exposure

Answer 9

contact dermatitis

Question 10

Pruritic, eczematous lesions

xerosis (dry skin), and lichenification

Most common on flexor creases

Answer 10

atopic dermatitis

Question 11

Tx of seborrheic dermatitis

Answer 11

ketoconazole shampoo

Question 12

Young women. Papulopustular, plaques, and scales around the mouth.

Answer 12

perioral dermatitis

Question 13

Tx of perioral dermatitis

Answer 13

topical metronidazole

Question 14

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”

Answer 14

dyshidrosis

Question 15

Tx of disydrosis…

Answer 15

topical steroids

Question 16

acute, well-demarcated, raised superficial bacterial skin infection with lymphatic involvement almost always caused by Streptococcus pyogenes

Answer 16

erysipelas

Question 17

Tx of erysipelas…

Answer 17

Pen G

Question 18

Skin lesions predominantly involving the extremities (hands, feet, and mucosa). Target-like shape, raised, blanching, and lack of itchiness

Type IV hypersensitivity to HSV

Answer 18

Erythema multiforme

Question 19

maculopapular, brick red rash on face beginning at hairline then progressing to palms and soles

Answer 19

Measles. (+ 4 Cs, Koplik spots)

Question 20

“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

Answer 20

Rubella

Question 21

only childhood exanthem that starts on the trunk and spreads to the face

Answer 21

Roseola

Question 22

Complication of impetigo?

Answer 22

post-strep glomerulonephritis

Question 23

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)

Answer 23

Lichen planus

Question 24

Tx of lichen planus…

Answer 24

topical CS

Question 25

5 Ps of lichen planus?

Answer 25

purple, papule, polygonal, pruritis, planar

Question 26

thick, leathery, brownish skin caused from repeated scratching...

Answer 26

lichen simplex chronicus

Question 27

Hyperpigmentation of the sun-exposed areas of the face (cheeks, forehead, nose, and chin) Appear as dark, irregular, well-demarcated macules/patches,

Answer 27

Melasma

Question 28

Tx of melasma

Answer 28

usually fades on own otherwise hydroquinone

Question 29

pearly papules with central umbilication

Answer 29

Molluscum contagiosum

Question 30

Tx of molluscum contagiosum

Answer 30

imiquimod, curettage

Question 31

Tx of nummular eczema...

Answer 31

ultra-high potency topical CS

Question 32

Tx of onychomycosis...

Answer 32

PO Terbinafine x 6 weeks or 12 weeks (fingers vs toes)

Question 33

What must be monitored on most oral antifungal regimens?

Answer 33

LFTs

Question 34

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

Answer 34

Pilonidal disease

Question 35

Tx of pilonidal disease...

Answer 35

drainage and removal of cyst

Question 36

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.

Answer 36

pityriasis rosea

Question 37

Tx of rosacea...

Answer 37

topical metronidazole

Question 38

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

Answer 38

Tinea versicolor

Question 39

Tx of tinea versicolor

Answer 39

selenium sulfide 2.5% for 10 minutes x 7-10 days

Question 40

Tx for vitiligo?

Answer 40

CS, tacrolimus