DERMATOLOGY NOTESFOR MEDICAL STUDENTS

ByJ.R. Phillip MD, PhD

SMASHWORDS EDITION

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PUBLISHED BY:J.R. Phillip MD, PhD on Smashwords

DERMATOLOGY NOTESFOR MEDICAL STUDENTS

Copyright © 2012 by J.R. Phillip MD, PhD

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Acanthosis Nigricans

Acanthosis nigricans on axilla

Velvety brown lesion usually located in axilla/neckAssn: stomach adenocarcinoma, MEN II b, insulin resistance (DM, obesity)

Acne Rosacea

An Old Man and His Grandson, by Domenico Ghirlandaio shows skin damage from end-stage rosacea

Looks like acne but begins in middle age

Assn: Rhinophyma (red bulbous nose, see image above)Tx: topical Metronidazole, Tetracycline POFamous Sufferers: J.P. Morgan

Self-conscious about his rosacea, J. P. Morgan hated being photographed

Severe Cystic AcneTx: Isotretinoin PO (vitamin A analogue, teratogenic, pregnancy test before commencing treatment then monthly)

Acne Vulgaris

Different types of Acne Vulgaris: A: Cystic acne on the face, B: Subsiding tropical acne of trunk, C: Extensive acne on chest and shoulders

Tx: Tretinoin, Benzoyl Peroxide, topical antibiotic

Actinic Keratosis

Actinic keratosis on the lip

Develops on sun-exposed areasPrecancerous lesion, can progress to squamous cell CAProphylaxis: sunscreenTx: topical 5-Fluorouracil (5-FU), Tretinoin (emollient cream), liquid N2

Alopecia Areata

AutoimmuneTx: localized Steroid injection (hair loss can recur after successful treatment)

Anthrax

Anthrax skin lesion

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