Dermatology Flashcards
Why should actinic keratosis be treated?
It may progress to squamous cell carcinoma.
What is first line treatment for rosacea?
Metronidazole, tetracycline is probably a close second.
Where are 90% of basal cell lesions found on the body?
On the head and neck
Purple, pruritic, polygonal, papules on physical exam should make you think of what diagnosis?
Lichen planus
What are the ABC’s of melanoma?
- Asymmetry,
- Border,
- Color,
- Diameter,
- Elevation/irregularity, evolving
A positive Auspitz sign should make you think of what diagnosis?
Psoriasis
What is the key indicator for the prognosis of melanoma?
Thickness of the lesion
What is the treatment for melanoma?
Wide local excision
A waxy stuck on appearance should make you think of what diagnosis?
Seborrheic keratosis
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
The term satellite lesion should make you think of what diagnosis?
Candida diaper rash
Coin-shaped plaques should make you think of what diagnosis?
Nummular eczema
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
A patient presents with flaky skin in the nasolabial folds and in her hair. What is the most likely diagnosis?
Seborrheic dermatitis
How do you treat a stasis dermatitis?
Compression stockings
Tapioca blisters should make you think of what diagnosis?
Dyshidrosis - these are usually on the hands and feet
How do you treat dyshidrosis?
Topical steroids
Giant cells on a Tzanck smear should make you think of what diagnosis?
Herpes simplex virus
How do you treat lichen simplex chronicus?
Get the patient to stop scratching it.
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 herpes viruses 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 benign 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
