Small plaque parapsoriasis
Small plaque parapsoriasis most commonly occurs in middle-aged adults and the elderly. The medical literature is replete with debate over the parapsoriasis group of dermatoses and their possible transformation into cutaneous T-cell lymphoma. The most recent World Health Organization classification of cutaneous lymphomas considers small plaque parapsoriasis a benign disease with no potential for transformation into lymphoma. In contrast, large plaque parapsoriasis is considered a premalignant lymphoproliferative disorder with potential for malignant transformation.
Parapsoriasis is typically asymptomatic or can be mildly pruritic. The itch may have a burning character. The course is indolent and typically chronic. Parapsoriasis can last for years.
L41.3 – Small plaque parapsoriasis
23854007 – Small plaque parapsoriasis
Differential Diagnosis & Pitfalls