Large plaque parapsoriasis

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Large plaque parapsoriasis
Classification and external resources
Specialty dermatology
ICD-10 L41.4
ICD-9-CM 696.2
eMedicine derm/311
MeSH D010267

Large plaque parapsoriasis (also known as "parapsoriasis en plaques"[1]) are skin lesions that may be included in the modern scheme of cutaneous conditions described as parapsoriasis.[2] These lesions, called plaques, may be irregularly round-shaped to oval and are 10 cm (4 in) or larger in diameter.[2] They can be very thin plaques that are asymptomatic or mildly pruritic.[2][3] Large-plaque parapsoriasis is a common associate of retiform parapsoriasis, can be accompanied by poikiloderma vasculare atrophicans, and can in rare occasions be a precursor to cutaneous T-cell lymphoma.[2]




Parapsoriasis treatment consists primarily of light therapy (more specifically PUVA therapy or UVB therapy) possibly in combination with topical steroids. [4] Large plaque parapsoriasis is usually a chronic condition that needs long-term treatment. [5]

See also[edit]


  1. ^ Kikuchi, A.; Naka, W.; Harada, T.; Sakuraoka, K.; Harada, R.; Nishikawa, T. (1993). "Parapsoriasis en plaques: its potential for progression to malignant lymphoma". Journal of the American Academy of Dermatology. 29 (3): 419–422. doi:10.1016/0190-9622(93)70204-7. PMID 8394392. 
  2. ^ a b c d Lambert WC, Everett MA (October 1981). "The nosology of parapsoriasis". J. Am. Acad. Dermatol. 5 (4): 373–95. doi:10.1016/S0190-9622(81)70100-2. PMID 7026622. 
  3. ^ Freedberg; et al. (2003). Fitzpatrick's Dermatology in General Medicine (6th ed.). McGraw-Hill. pp. 450–452. ISBN 0-07-138076-0. 
  4. ^ "Psoriasis". 
  5. ^ " Overview of Parapsoriasis".