Red Scaly Rash Flashcards
when dealing with rashes, what do you rule out first how?
- fungal infection - KOH exam
what is an acute exanthematous eruption that mainly occurs in young people
- Pityriasis rosea
Pityriasis rosea related to what kind of infection
- HHV6
Pityriasis rosea symptoms
- asymptomatic - patients may have flu-like symptoms before
Pityriasis rosea pattern
- follows skin tension lines
Pityriasis rosea palm and sole involvement
- none
Pityriasis rosea classically starts with a
- herald patch
what is the annular erythematous 2-10 cm patch on the body that presents with Pityriasis rosea
- herald patch
secondary phase of Pityriasis rosea
- symmetrical patches and plaques
scale and clearing with herald patch in Pityriasis rosea
- peripheral scale - central clearing
Pityriasis rosea color in white people
- salmon colored
Pityriasis rosea in darker skin types
- brown, gray, purple
Pityriasis rosea treatment
- generally self limiting
what begins with a painless chancre sore
- primary syphilis
what is characteristic round macule with collarettes of scale on the palms and soles of the feet
- secondary syphilis
how to confirm secondary syphilis
- skin biopsy with T. pallidum immunostain - serologic test
treatment for secondary syphilius
- IM penicillin G
what presents as multiple coin-shaped eczematous plaques on the extremities and trunk
- nummular dermatitis
central clearing of nummular dermatitis
- lack central clearing
big symptom of nummular dermatitis
- very itchy - lasts a long time
characteristics of lesions of nummular dermatitis
- may weep - crack - or crust
treatment of nummular dermatitis
- potent steroid
what affects the lower legs, flanks, and arms in the elderly
- asteatotic dermatitis (xerotic eczema)
early signs of asteatotic dermatitis (xerotic eczema)
- flaking of skin - pruritis
treatment of evolved asteatotic dermatitis (xerotic eczema)
- high potency topical steroid
how to rule out tine corporis
- do KOH test
what is the serological test for syphilis
- rapid plasma reagin
