Derm hot takes Flashcards
What is Nummular Eczema
Coin shaped eczema that comes in multiples
KOH negative!
What does Pityriasis alba look like
poorly defined, hypopigmented, scaly patches on the cheeks
What is Pityriasis alba
Usually asymptomatic, type of atopic dermatitis of the face
- Usually in young children with darker skin
- Presents in spring and summer when skin tans
- Will fade with time
How do you treat Pityriasis alba
- Moisturize and use sunscreen
- If they do not work, Low dose topical steroid (1) or topical calcineurin inhibitor (2)
What is irritant contact dermatitis
Inflammatory reaction in skin 2/2 exposure to a substance that causes an eruption
What does irritant contact dermatitis look like
Varies based on agent erythema, chapped skin, dryness, fissuring Pruritis Pain Edema, exudate, ttp Painful bullae
What is Contact dermatitis
Inflammatory reaction of skin to irritating agent
Shows up in geometric distribution depending on what touched the skin
-Red, irritated, scaly skin
What do bed bugs cause
wound, welted lesions similar to hives
-If you are not exposed, they go away!
What do flea and mosquito bites look like
Tiny round hives
-pruritic, but not toxic
What is Pityriasis rosea often mistaken for
Secondary Syphillis
What does a viral exanthum usually look like
Generic morbilliform rash on the trunk, spreads to the extremities, then goes away
What does hot tub folliculitis look like
Little red bumps or pustules showing up where your swim suit was
-Tender papules likely from chemicals
What organism is associated with hot tub folliculitis
Pseudomonas!
What is a dermatofibroma
small, brown papule that shows up likely 2/2 a previous trauma (vaccination, injection, bug bite, etc)
-NOT malignant
What does a dermato fibroma look like
Firm, does not stick out of skin
-If you pinch it, it dimples like a button hole
