derm Flashcards by Megan Ferron

DERMATOLOGY

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Why should actinic keratosis be treated?

It may progress to squamous cell carcinoma.

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What is first line treatment for rosacea?

Metronidazole tetracycline is probably a close second.

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Where are 90% of basal cell lesions found on the body?

On the head and neck

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Purple, pruritic polygonal, papules on physical exam should make you think of what diagnosis?

Lichen planus

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What are the ABC’s of melanoma?

Asymmetry border color, diameter, elevation/irregularity, evolving

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A positive Auspitz sign should make you think of what diagnosis?

Psoriasis

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What is the key indicator for the prognosis of melanoma?

Thickness of the lesion

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What is the treatment for melanoma?

Wide local excision

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A waxy stuck on appearance should make you think of what diagnosis?

Seborrheic keratosis

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A 5 year old presents in early January with a red itchy rash behind his knees. You notice it on the flexor surfaces of his elbows as well. What is the most likely diagnosis?

Atopic dermatitis = relapsing eczema

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The term satellite lesion should make you think of what diagnosis?

Candida diaper rash

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Coin-shaped plaques should make you think of what diagnosis?

Nummular eczema

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A 30 year old female presents with pustules on her face that spare the vermilion border. In her history she has been using topical steroids. What is the most likely diagnosis?

Perioral dermatitis

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A patient presents with flaky skin in the nasolabial folds and in her hair. What is the most likely diagnosis?

Seborrheic dermatitis

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How do you treat a stasis dermatitis?

Compression stockings

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Tapioca blisters should make you think of what diagnosis?

Dyshidrosis - these are usually on the hands and feet

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How do you treat dyshidrosis?

Topical steroids

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Giant cells on a Tzanck smear should make you think of what diagnosis?

Herpes simplex virus

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How do you treat lichen simplex chronicus?

Get the patient to stop scratching it.

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A herald patch should make you think of what diagnosis?

Pityriasis rosea

How do you treat pityriasis rosea?

Reassurance

A patient with a history of herpes now presents with a target lesion. What is the most likely diagnosis?

Erythema multiforme

Rhinophyma should make you think of what diagnosis?

Acne rosacea

Silvery scales should make you think of what diagnosis?

Psoriasis

A teardrop lesion after a course of strep throat should make you think of what diagnosis?

Guttate psoriasis

Are lesions from psoriasis typically found on flexor or extensor surfaces?

Extensor

What is the first line treatment for tinea corporis?

Topical azoles

What are the two most common organisms responsible for cellulitis?

Strep and Staph

Pitting nails are associated with what dermatologic disorder?

Psoriasis

Nummular eczema is most like what other dermatological disorder?

Atopic dermatitis

Honey-colored crusts should make you think of what diagnosis?

Impetigo

What two human papillomaviruses are most responsible for condyloma acuminata?

HSV 6 and 11

A double comedone is indicative of what diagnosis?

Hidradenitis suppurativa

What is the best treatment for molluscum contagiosum?

It is self limiting, but can be removed if patient really wants it.

What is the treatment for seborrheic keratosis?

It is bengin so there is no need to treat it. Lesions may be removed if unsightly.

Hyperpigmented velvety plaques should make you think of what diagnosis?

Acanthosis nigricans

Melasma is most often found in what patient population?

Women of childbearing age

Extremely pruritic lesions with burrows in runs should make you think of what diagnosis?

Scabies

What is the first step in treating atopic dermatitis?

Behavioral modifications - reduce bathing, only use soap on face and genitals use natural breathable fabrics

What is the treatment for a bad brown recluse spider bite?

Debridement, the venom causes tissue necrosis.

Salmon-colored scales should make you think of what diagnosis?

Psoriasis

Depigmented patches of skin should make you think of what diagnosis?

Vitiligo

Spaghetti and meatballs on KOH prep should make you think of what diagnosis?

Tinea versicolor

What dermatologic finding is associated with insulin insensitivity?

Acanthosis nigricans

A slowly growing nodule with a central depression and a pearly border should make you think of what diagnosis?

Basal cell carcinoma

What dermatologic finding is associated with asthma?

Atopic dermatitis

A christmas tree pattern should make you think of what diagnosis?

Pityriasis rosea

Oval patches of hair loss should make you think of what diagnosis?

Alopecia areata

What is the first line treatment for genital warts?

Imiquimod (Aldara)

A pearly dome-shaped lesion with a central umbilication should make you think of what diagnosis?

Molluscum contagiousum

What is the best lab test for scabies?

Microscopic examination under oil immersion