DERM

Question 1

Viral diseases of the skin is characterized by flesh colored, waxy umbilicated papules?

Answer 1

Molluscum contagiosum virus causes characteristic skin lesions consisting of single or multiple (most common), rounded, dome-shaped, pink, waxy papules that are usually 2-5 mm in diameter. The papules are umbilicated, and contain a caseous plug.

Question 2

typical lesion of basal cell carcinoma

Answer 2

Flesh colored papule with a pearly, shiny quality, telangiectasias, and ulceration
Basal cell carcinoma (BCC) is the most common cancer in humans, and it usually develops on areas exposed to the sun, especially the face, head, and neck. Nodular BCC (most common) classically presents as a slowly growing papule or nodule with a pearly, shiny quality, and small arborizing telangiectasias. The tumor may enlarge and crusting may appear over a central depression. Bleeding with minor trauma is fairly frequent. The lesion may ulcerate over time (rodent ulcer), but a rolled border usually remains serving as a clue to diagnosis.

Question 3

Malassezia furfur

Answer 3

yeast causing tinea versicolor

Question 4

tinea versicolor

• sx
• MC areas
• dx

Answer 4

• Skin patches are hypopigmented (fail to tan) or hyperpigmented
• Tinea versicolor is most common on the neck, trunk, upper back, and proximal extremities.
• The fungal hyphae and yeast spores have a “spaghetti and meatballs” appearance on KOH wet mount preparatio

Question 5

Psoriatic lesions are most commonly found on?

Answer 5

extensor surfaces of the extremities, scalp and back.

Question 6

koilonychia

• appearance
• MC cause

Answer 6

Curling upwards of the nail plate in a “spoon-shaped” fashion

• Iron deficiency anemia MC
• also occurs in hemochromatosis.

Question 7

Splinter hemorrhages

• appearance
• MC cause

Answer 7

-red or black streaks underneath the nail plate that resemble a splinter

• Trauma is MC cause
• Also also associated with infective endocarditis, IV drug use, rheumatic heart disease, SLE, and psoriasis.

Question 8

Atopic dermatitis

• sx
• rx

Answer 8

• chronic inflammatory skin condition that causes severe dryness and pruritus.
• Topical corticosteroids with emollients are considered the first-line treatment