babli
Forum Guru
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CASE:
A 42-year-old man has had an extensive rash for three or four weeks. The dermatitis began as a solitary patch on his left upper arm, and several days later similar lesions appeared on his back and chest. He has no symptoms aside from occasional mild itching and is not taking any oral medications. Cutaneous examination reveals multiple, discrete, round-to-oval erythematous scaling patches on the extremities and trunk. The face, palms, and soles are not affected.
What's the diagnosis?
Attached Files:
Dxjan01.jpg (8 KB, 10 downloads)
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| Jinx
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Pityriasis Rosea
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| chemamr
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agree
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| Banti
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The patient has pityriasis rosea, a common, acute, self-limited papulosquamous skin disorder typified by round-to-ovid lesions encircled by a fine collarette of scale. The eruption is usually confined to the upper extremities and trunk, and a Christmas-tree distribution on the back is classic. Also classic is the appearance of a so-called herald patch a few days before the onset of the full-blown exanthem. The cause of pityriasis rosea is unknown, but a viral origin has been postulated. Mild cases do not require any treatment; however, oral or topical steroids may be warranted to shorten the course of extensive disease.
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| aml
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pityriasis rosea
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| babli
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http://www.emedmag.com/html/pre/dia/01_01.asp
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