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Difference between revisions of "Pityriasis rubra pilaris"
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Pityriasis rubra pilaris (view source)
Revision as of 11:37, 29 September 2014
, 11:37, 29 September 2014no edit summary
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==Histologic DDx== | ==Histologic DDx== | ||
*Psoriasis vulgaris.<ref name=pmid18418089>{{Cite journal | last1 = Brinster | first1 = NK. | title = Dermatopathology for the surgical pathologist: a pattern based approach to the diagnosis of inflammatory skin disorders (part I). | journal = Adv Anat Pathol | volume = 15 | issue = 2 | pages = 76-96 | month = Mar | year = 2008 | doi = 10.1097/PAP.0b013e3181664e8d | PMID = 18418089 }}</ref> | *PRP is easy to miss - clinical history (r/o PRP) usually provides the best clue. | ||
*Darier disease | *Psoriasis vulgaris.<ref name=pmid18418089>{{Cite journal | last1 = Brinster | first1 = NK. | title = Dermatopathology for the surgical pathologist: a pattern based approach to the diagnosis of inflammatory skin disorders (part I). | journal = Adv Anat Pathol | volume = 15 | issue = 2 | pages = 76-96 | month = Mar | year = 2008 | doi = 10.1097/PAP.0b013e3181664e8d | PMID = 18418089 }}</ref> - thinned suprapapillary plates, hypogranulosis, neutrophils in the stratum corneum, dilated papillary dermal blood vessels, acantholysis absent | ||
*Seborrhoeic dermatitis. | *Lichen simplex chronicus. | ||
*Darier disease - acantholysis is prominent with corps ronds and grains, follicular plugging absent | |||
*Seborrhoeic dermatitis - more spongiotic, often with neutrophils. | |||
*[[Dermatophtosis|Fungal infection]]. | *[[Dermatophtosis|Fungal infection]]. | ||