List some potential causes of necrotizing fascitis? - surgical procedures
insect bites
intramuscular injections
local ischemia in diabetics
Describe seborrheic keratosis. - Benign
Hyperpigmented lesions in elderly
"Stuck-on" appearance
Common on face, shoulders, chest, and back
The growth h...
NPLEX II- Dermatology
List some potential causes of necrotizing fascitis? - surgical procedures
insect bites
intramuscular injections
local ischemia in diabetics
Describe seborrheic keratosis. - Benign
Hyperpigmented lesions in elderly
"Stuck-on" appearance
Common on face, shoulders, chest, and back
The growth has a waxy, scaly, slightly elevated appearance
What condition is dermatitis herpetiformis commonly associated with?q - celiac disease (gluten
sensitivities)
Clinical features of basal cell carcinoma - pearl papule with telangiectatic (spider like) vessels
Kaposi's sarcoma is associated with with other conditions? Common sites? - AIDS, HSV 8, and the
immunocompromised
SitesL mouth, skin, GI tract
What are the ABCDE's characterizing a melaoma? - A- asymmetry of shape
B- border irregularity
C- color (different shades of brown, tan)
D- diameter >6mm
E-enlargement, elevation, evolution
, Describe the typical initial presentation of squamous cell carcinoma (including m/location). -
Initial presentation: hx of non-healing ulcer or abnormal growth from sun exposed area
70% occur on head & neck (often involving lower lip)
DDx btw bullous pemphigold and vulgaris pemphigus - Bullous- IgG antibodies against dermal
epidermal basement membrane proteins that lead to subepidermal bullae; don't easily rupture
Pemphigus Vulgaris- potentially FATAL autoimmune dz; bullae rupture resulting in secondary bacterial
infections, septicemia, and fluid loss
NOTE: both are not contagious
Name 2x topical oral steroids commonly used for contact dermatitis? - hydrocortisone and
prednisone
How long do erythema multiforme last? - lesions last 2 weeks and heal without complications.
What are the key clinical features of psoriasis? - Silver Scales and Pitted Nails
Auspitz sign: blood vessles in dermis rupture when the scales are picked off
When you see vitiligo what system conditions do you need to rule out/investigate? - Autimmune
disease: thyroid disease, addison's disease, Type 1 DM
What causes actnic keratosis? is it malignant? - pre-malignant epidermal lesion caused by
excessive chronic sunlight exposure.
Pre-cursor to squamous cell carcinoma (SCC) but only 2-5% actually become SCC
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