dermatologic disorders
Parapsoriasis
Introduction
Parapsoriasis refers to a group of skin diseases characterized by maculopapular or scaly lesions. Diagnosis is clinical. Treatment may include a combination of various topical and oral medications and phototherapy. Parapsoriasis describes a poorly understood, etiologically heterogeneous and poorly distinguished group of diseases that share clinical features. Parapsoriasis is not related to Psoriasis ; it is so-called because the scaly plaques sometimes appear similar. There are 2 general forms: Small-plaque type: Usually benign Large-plaque type: A precursor of Cutaneous T-cell Lymphomas (CTCL) (CTCL) Parapsoriasis can transform into CTCL with small-plaque parapsoriasis doing so at a smaller rate compared with large-plaque parapsoriasis (10% versus 35%) ( Reference ). Thus, periodic clinical follow-up and biopsies may help identify progression of parapsoriasis to CTCL. 