Derm Findings in IM

Question 1

dermatitis herpetaformis

Answer 1

celiac disease

Question 2

sudden-onset severe psoriasis

Answer 2

HIV

Question 3

severe seborrheic dermatitis

Answer 3

HIV infx, Parkinson’s disease

Question 4

Pyoderma gangrenosum

Answer 4

IBD

Question 5

mutliple skin tags (acrochondrons)

Answer 5

pregnancy, insulin resistance, Crohn’s (peri-anally in particular)

Question 6

porphyria cutanea tarda

Answer 6

Hep C (dorsum of hand, coral pink under Wood’s lamp, d/t diminished amount of liver enzyme uroporphyrinogen decarboxylase)

Question 7

recurrent Zoster

Answer 7

HIV

Question 8

cutaneous leukocytoclastic vasculitis (palpable purpura)

Answer 8

Hep C (2/2 cryoglobulinemia)

Question 9

disseminated molluscum contagiosum

Answer 9

HIV

Question 10

acanthosis nigricans

Answer 10

insulin resistance (PCOS, DM, obesity, etc) OR GI/GU malignancy (usually in abnl areas e.g. palms, soles and/or MM)

Question 11

explosive onset of multiple itchy seborrheic keratoses

Answer 11

GI malig

Question 12

erythema multiforme association

Answer 12

HSV

Question 13

normal serum phos?

Answer 13

3.0-4.5 md/dL

Question 14

Corrected calcium

Answer 14

= (measure total Ca) + 0.8*(4.0 g/dL - serum alb in g/dL)

Question 15

Blood gas sign of impending respiratory failure in asthma attack

Answer 15

normal or elevated PaCO2: should be low from hyperventilation, if not, pt is tiring out

Question 16

MM mnenomic

Answer 16

CRAB: [C]alcium (hyperCa), [R]enal impairment, [A]nemia, [B]ones (lytic lesions, pain)

Question 17

delta wave = ?

Answer 17

WPW

Question 18

erythema nodosum

Answer 18

erythematous, tender, 2-3cm nodules on b/l shins; most often idiopathic (30-50%), also assoc’d w/ strep infx (kids), pulm TB/histoplasmosis/mycoplasma/cocci, other ID; Beçhets, IBD sarcoid; drugs (sulfa, pens, OCPs HepB vacc); NHL, carcinoid, pancreatic malig