Diseases

Parapsoriasis

The term applied to a group of relatively uncommon inflammatory, maculopapular, scaly eruptions of unknown etiology and resistant to conventional treatment. Eruptions are both psoriatic and lichenoid in appearance, but the diseases are distinct from psoriasis, lichen planus, or other recognized dermatoses. Proposed nomenclature divides parapsoriasis into two distinct subgroups, PITYRIASIS LICHENOIDES and parapsoriasis en plaques (small- and large-plaque parapsoriasis).

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The term applied to a group of relatively uncommon inflammatory, maculopapular, scaly eruptions of unknown etiology and resistant to conventional treatment. Eruptions are both psoriatic and lichenoid in appearance, but the diseases are distinct from psoriasis, lichen planus, or other recognized dermatoses. Proposed nomenclature divides parapsoriasis into two distinct subgroups, PITYRIASIS LICHENOIDES and parapsoriasis en plaques (small- and large-plaque parapsoriasis).

MeSH Record

Classification

Broader headings

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MeSH Record

Synonyms

12 entry terms
  • Digitate Dermatosis
  • Dermatoses, Digitate
  • Dermatosis, Digitate
  • Digitate Dermatoses
  • Parapsoriases
  • Erythroderma, Maculopapular
  • Parakeratosis Variegata
  • Parapsoriasis en Plaques
  • Erythrodermas, Maculopapular
  • Maculopapular Erythroderma
  • Maculopapular Erythrodermas
  • Parapsoriasis en Plaque

MeSH Record

Aspects Covered

35 allowable subheadings

Indexed with the subheadings blood, cerebrospinal fluid, chemically induced, classification, complications, congenital, diagnosis, diagnostic imaging, diet therapy, drug therapy, economics, embryology, enzymology, epidemiology, ethnology, etiology, genetics, history, immunology, metabolism, microbiology, mortality, nursing, parasitology, pathology, physiopathology, prevention & control, psychology, radiotherapy, rehabilitation, surgery, therapy, urine, veterinary, virology.

MeSH Record

Indexing Annotation

a papulosquamous skin dis

MeSH Record

History Note

PARAKERATOSIS VARIEGATA was see under PARAPSORIASIS 1963-78

MeSH Hierarchy

Tree Number

  1. C17.800w.859w.575w

MeSH Record

NLM Classification

WR 204

AMA Style

References

  1. National Library of Medicine. Parapsoriasis. Medical Subject Headings (MeSH). 2026. Unique ID D010267. http://id.nlm.nih.gov/mesh/2026/D010267
  2. Parapsoriasis. In: Wikipedia. https://en.wikipedia.org/wiki/Parapsoriasis
  3. Parapsoriasis. In: Wikidata. https://www.wikidata.org/wiki/Q2051832