Pityriasis rosea: Difference between revisions
(Created page with "==Background== *Mild inflammatory exanthem **May be caused by HHV 6 and 7 *Most common 10-35yr old *Not contagious *Spontaneous resolution occurs w/in 4-12wk ==Diagnosis== *Begi...") |
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==Diagnosis== | ==Diagnosis== | ||
*Begins | *Begins with single, "herald," patch (salmon-colored, fine scaling) | ||
*Followed in 1-2 weeks by generalized diffuse papulosquamous rash mostly on trunk | |||
** | **Secondary rash with fine scaling oval macules and plaques following Langer Lines ("Christmas tree" pattern) | ||
*Pruritus can be moderate to severe | *Pruritus can be moderate to severe | ||
Revision as of 15:54, 4 January 2015
Background
- Mild inflammatory exanthem
- May be caused by HHV 6 and 7
- Most common 10-35yr old
- Not contagious
- Spontaneous resolution occurs w/in 4-12wk
Diagnosis
- Begins with single, "herald," patch (salmon-colored, fine scaling)
- Followed in 1-2 weeks by generalized diffuse papulosquamous rash mostly on trunk
- Secondary rash with fine scaling oval macules and plaques following Langer Lines ("Christmas tree" pattern)
- Pruritus can be moderate to severe
DDx
- Psoriasis
- Tinea corporis
- Usually not as widespread
- Pityriasis versicolor
- Also has fine scaling but KOH is diagnostic
Treatment
- Pruritus
- Antihistamine, topical steroids
- Triamcinolone 0.1% - Adults
- Hydrocortisone 1% - children)
- Antihistamine, topical steroids
- Natural sunlight may speed up resolution
Disposition
- Discharge
Source
Tintinalli