Dermatology Review

Question 1

Why should actinic keratosis be treated?

Answer 1

It may progress to squamous cell carcinoma.

Question 2

What is first line treatment for rosacea?

Answer 2

Metronidazole, tetracycline is probably a close second.

Question 3

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

Answer 3

On the head and neck

Question 4

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

Answer 4

Lichen planus

Question 5

What are the ABC’s of melanoma?

Answer 5

Asymmetry, border, color, diameter, elevation/irregularity, evolving.

Question 6

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

Answer 6

Psoriasis

Question 7

What is the key indicator for the prognosis of melanoma?

Answer 7

Thickness of the lesion

Question 8

What is the treatment for melanoma?

Answer 8

Wide local excision

Question 9

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

Answer 9

Seborrheic keratosis

Question 10

A five year old presents in January with a red itchy rash behind his knees and on the flexor surfaces of the elbows. What is the most likely diagnosis?

Answer 10

Atopic dermatitis

Question 11

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

Answer 11

Candida diaper rash

Question 12

Coin shaped plaques should make you think of what diagnosis?

Answer 12

Nummular eczema

Question 13

A thirty 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?

Answer 13

Perioral dermatitis

Question 14

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

Answer 14

Seborrheic dermatitis

Question 15

How do you treat a stasis dermatitis?

Answer 15

Compression stockings

Question 16

Tapioca blisters should make you think of what diagnosis?

Answer 16

Dyshidrosis - these are usually on the hands and feet.

Question 17

How do you treat dyshidrosis?

Answer 17

Topical steroids

Question 18

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

Answer 18

Herpes simplex virus

Question 19

How do you treat lichen simplex chronicus?

Answer 19

Get the patient to stop scratching it.

Question 20

A herald patch should make you think of what diagnosis?

Answer 20

Pityriasis rosea

Question 21

How do you treat pityriasis rosea?

Answer 21

Reassurance

Question 22

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

Answer 22

Erythema multiforme

Question 23

Rhinophyma should make you think of what diagnosis?

Answer 23

Acne Rosacea

Question 24

Silvery scales should make you think of what diagnosis?

Answer 24

Psoriasis

Question 25

Tear drop lesion after a course of strep throat should make you think of what diagnosis?

Answer 25

Guttate psoriasis

Question 26

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

Answer 26

Extensor

Question 27

What is the first line treatment for tinea corporis?

Answer 27

Topical azoles

Question 28

What are the two most common organisms responsible for cellulitis?

Answer 28

Strep and Staph

Question 29

Pitting nails are associated with what dermatologic disorder?

Answer 29

Psoriasis

Question 30

Nummular eczema is most like what other dermatological disorder?

Answer 30

Atopic dermatitis

Question 31

Honey colored crusts should make you think of what diagnosis?

Answer 31

Impetigo

Question 32

What two herpes viruses are most responsible for condyloma accuminata?

Answer 32

HSV 6 and 11

Question 33

A double comedone is indicative of what diagnosis?

Answer 33

Hidradenitis suppurativa

Question 34

What is the best treatment for molluscum contagiosum?

Answer 34

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

Question 35

What is the treatment for seborrheic keratosis?

Answer 35

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

Question 36

Hyperpigmented velvety plaques should make you think of what diagnosis?

Answer 36

Acanthosis Nigricans

Question 37

Melasma is most often found in what patient population?

Answer 37

Women of childbearing age.

Question 38

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

Answer 38

Scabies

Question 39

What is the first step in treating atopic dermatitis?

Answer 39

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

Question 40

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

Answer 40

Debridement, the venom causes tissue necrosis.

Question 41

Salmon colored scales should make you think of what diagnosis?

Answer 41

Psoriasis

Question 42

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

Answer 42

Vitiligo

Question 43

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

Answer 43

Tinea versicolor

Question 44

What dermatologic finding is associated with insulin insensitivity?

Answer 44

Acanthosis nigricans

Question 45

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

Answer 45

Basal cell carcinoma

Question 46

What dermatologic finding is associated with asthma?

Answer 46

Atopic dermatitis

Question 47

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

Answer 47

Pityriasis rosea

Question 48

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

Answer 48

Alopecia areata

Question 49

What is the first line treatment for genital warts?

Answer 49

Imiquimod (aldara)

Question 50

Pearly dome shaped lesion with a central umbilication should make you think of what diagnosis?

Answer 50

Mulluscum contagiousum

Question 51

What is the best lab test for scabies?

Answer 51

Microscopic examination under oil immersion.