653
edits
Difference between revisions of "Pityriasis rubra pilaris"
Jump to navigation
Jump to search
Pityriasis rubra pilaris (view source)
Revision as of 11:21, 29 September 2014
, 11:21, 29 September 2014no edit summary
| Line 5: | Line 5: | ||
| Caption = | | Caption = | ||
| Synonyms = | | Synonyms = | ||
| 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 | | 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]], Psoriasis, Darier disease, seborrhoeic dermatitis | | LMDDx = [[Dermatomycosis|fungal infection]], Psoriasis, Darier disease, seborrhoeic dermatitis | ||
| Line 18: | Line 18: | ||
| Assdx = HIV infection - recalcitrant PRP | | Assdx = HIV infection - recalcitrant PRP | ||
| Syndromes = | | Syndromes = | ||
| 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. | | 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 = | ||
| Line 46: | Line 46: | ||
Features:<ref name=pmid24783259>{{Cite journal | last1 = Marrouche | first1 = N. | last2 = Kurban | first2 = M. | last3 = Kibbi | first3 = AG. | last4 = Abbas | first4 = O. | title = Pityriasis rubra pilaris: clinicopathological study of 32 cases from Lebanon. | journal = Int J Dermatol | volume = 53 | issue = 4 | pages = 434-9 | month = Apr | year = 2014 | doi = | PMID = 24783259 }}</ref> | Features:<ref name=pmid24783259>{{Cite journal | last1 = Marrouche | first1 = N. | last2 = Kurban | first2 = M. | last3 = Kibbi | first3 = AG. | last4 = Abbas | first4 = O. | title = Pityriasis rubra pilaris: clinicopathological study of 32 cases from Lebanon. | journal = Int J Dermatol | volume = 53 | issue = 4 | pages = 434-9 | month = Apr | year = 2014 | doi = | PMID = 24783259 }}</ref> | ||
*Alterating [[orthokeratosis]] and [[parakeratosis]] - known as "checkerboard pattern". | *Alterating [[orthokeratosis]] and [[parakeratosis]] - known as "checkerboard pattern". | ||
*Marked uniform [[acanthosis]] with broad dermal papillae and broad epidermal ridges | |||
*Follicular plugging. | |||
*+/-Eosinophils (common). | *+/-Eosinophils (common). | ||
* | *Scattered foci of [[Acantholysis]].<ref name=pmid23286804/> | ||
DDx: | DDx: | ||
*[[ | *[[Dermatophyosis|Fungal infection]]. | ||
*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> | *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> | ||
*Darier disease. | |||
*Seborrhoeic dermatitis. | |||
===Images=== | ===Images=== | ||