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Difference between revisions of "Pityriasis rubra pilaris"
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Pityriasis rubra pilaris (view source)
Revision as of 11:13, 29 September 2014
, 11:13, 29 September 2014no edit summary
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| Caption = | | Caption = | ||
| Synonyms = | | Synonyms = | ||
| Micro = alterating [[orthokeratosis]] and [[parakeratosis]] (known as "checkerboard pattern"), +/-eosinophils (common), follicular plugging, [[acantholysis]] (common) | | Micro = alterating [[orthokeratosis]] and [[parakeratosis]] (known as "checkerboard pattern"), marked uniform acanthosis with broad dermal papillae and broad epidermal ridges, , +/-eosinophils (common), follicular plugging, scattered foci of [[acantholysis]] (common), occasional mild spongiosis | ||
| Subtypes = | | Subtypes = | ||
| LMDDx = [[Dermatomycosis|fungal infection]] | | LMDDx = [[Dermatomycosis|fungal infection]], Psoriasis, Darier disease, seborrhoeic dermatitis | ||
| Stains = PASD -ve (to r/o fungal infections) | | Stains = PASD -ve (to r/o fungal infections) | ||
| IHC = | | IHC = | ||
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| Grossing = | | Grossing = | ||
| Site = [[skin]] - see ''[[inflammatory skin disorders]]'' | | Site = [[skin]] - see ''[[inflammatory skin disorders]]'' | ||
| Assdx = | | Assdx = HIV infection - recalcitrant PRP | ||
| Syndromes = | | Syndromes = | ||
| Clinicalhx = | | Clinicalhx =Classic adult - self-limited exfoliative, erythematous dermatitis that starts over the head and neck and extends downwards forming orange plaques with spared islands of normal skin, follicular hyperkeratosis, palmar involvement with orange hyperkeratosis. | ||
| Signs = | | Signs = | ||
| Symptoms = | | Symptoms = | ||