Dermatology Flashcards
Where are 90% of basal cell lesions found on the body?
Head and neck
What are the ABC’s of melanoma?
asymmetry, border, color, diameter, elevation/irregularity
Rhinophyma should make you think of what diagnosis?
Acne Rosacea
A slowly growing nodule with a central depression and a pearly border is often referring to what type of skin lesion?
Basal cell carcinoma
A herald patch should make you think of what diagnosis?
Pityriasis rosea
Oval patches of hair loss should make you think of what diagnosis?
Alopecia areata
What two herpes viruses are most responsible for condyloma accuminata?
HSV 6 and 11
Pitting nails is associated with what dermatologic disorder?
Psoriasis
How do you treat a stasis dermatitis?
Compression stockings
Purple, pruritic, polygonal, papule on physical exam should make you think of what diagnosis?
Lichen planus
Why should should actinic keratosis be removed?
It may progress to squamous cell carcinoma
Pearly dome shaped lesion with a central umbilication should make you think of what diagnosis?
Mulluscum contagiousum
What is the best treatment for molluscum contagiosum?
It is self limiting, but can be removed if patient really wants it
Melasma is most often found in what patient population?
Women of childbearing age
What is the key indicator of prognosis in melanoma?
Thickness of the lesion
What is first line treatment for rosacea?
Metronidazole, tetracycline is probably a close second
Nummular eczema is most like what other dermatological disorder?
Atopic dermatitis
Depigmented patches of skin should make you think of what diagnosis?
Vitiligo
What are the two most common organisms responsible for cellulitis?
Strep and Staph
What is the first line treatment for tinea corporis?
Topical azoles
What is the first line treatment for genital warts?
Imiquimod (aldara)
5 year old presents in January with a red itchy rash behind his knees and on the flexor surface of the elbows. What diagnosis should you be thinking of?
Atopic dermatitis
A positive auspitz sign should make you think of what diagnosis?
Psoriasis
Hyperpigmented velvety plaques should make you think of what diagnosis?
Acanthosis Nigricans
The term satellite lesion should make you think of what diagnosis?
Candida diaper rash
Honey colored crusts should make you think of what diagnosis?
Impetigo
Giant cells on a Tzanck smear should make you think of what diagnosis?
Herpes simplex virus
Extremely pruritic lesions with burrows in runs should make you think of what diagnosis?
Scabies
Tear drop lesion after a course of strep throat should make you think of what diagnosis?
Guttate psoriasis
What is the best lab test for scabies?
Microscopic examination under oil immersion
A patient with a history of herpes now presents with a target lesion. What diagnosis should you be thinking of?
Erythema multiforme
Salmon colored scales should make you think of what diagnosis?
Psoriasis
A patient presents with flaky skin in the nasolabial folds or in the hair. What diagnosis should you be thinking of?
Seborrheic dermatitis
A christmas tree pattern should make you think of what diagnosis?
Pityriasis rosea
What is the first step in treating atopic dermatitis?
Behavioral modifications - reduce bathing, only use soap on face and genitals, use natural breathable fabrics
How do you treat pityriasis rosea?
Reassurance
Are lesions from psoriasis typically found on flexor or extensor surfaces?
Extensor
What is the treatment for seborrheic keratosis?
Bengin no need to treat. Lesions may be removed if unsightly
What is the treatment for a bad brown recluse spider bite?
Debridement, the venom causes tissue necrosis
What dermatologic finding is associated with asthma?
Atopic dermatitis
30 year old female presents with vesicles on her face that spare the vermilion border. In her history she has been using topical steroids. What diagnosis should you be thinking of?
Perioral dermatitis
Tapioca blisters should make you think of what diagnosis?
Dyshidrosis - these are usually on the hands and feet
Silvery scales should make you think of what diagnosis?
Psoriasis
What is the treatment for melanoma?
Moh’s surgery
A waxy stuck on appearance should make you think of what diagnosis?
Seborrheic keratosis
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
Coin shaped plaques should make you think of what diagnosis?
Nummular eczema
How do you treat dyshidrosis?
Topical steroids
How do you treat lichen simplex chronicus?
Get the patient to stop scratching it
A double comedone is indicative of what diagnosis?
Hidradenitis suppurativa
