parapsoriasis
/ˌparəsəˈrʌɪəsɪs/Medicine
noun
Any of a group of chiefly chronic skin diseases characterized by the presence of scaly lesions thought to resemble those of psoriasis, several of which are now recognized to be caused by benign or pre-malignant clonal proliferation of T cells.
Origin
Early 20th century; earliest use found in British Journal of Dermatology. From French parapsoriasis from para- + psoriasis.