Equestrian perniosis

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Equestrian perniosis is a skin condition that presents on the lateral thighs of equestrians who ride on cold damp days.[1]

Cause[edit | edit source]

Riding a horse on cold damp days

Clinical features[edit | edit source]

tender burning nodular plaques on their bilateral thighs after riding in the cold.

Resolution[edit | edit source]

These lesions tend to resolve rapidly with minimal exposure to cold, and wearing loose, layered warm clothing.[2]

Histology[edit | edit source]

  • The histology of this disease is similar to perniosis
  • In Equestrian perniosis, perivascular lymphocytic infiltrate prominently involves the fat.

Treatment[edit | edit source]

It usually resolves on its own with stopping the activity of riding a horse on cold damp days.

See also[edit | edit source]

References[edit | edit source]

  1. Book:Andrews' Diseases of the Skin: Clinical Dermatology edition=12th publisher=Elsevier year=2015 isbn=978-0323319676
  2. Stewart CL, Adler DJ, Jacobson A, Brod BA, Shinohara MM, Seykora JT, Elenitsas R, Rosenbach M. Equestrian perniosis: a report of 2 cases and a review of the literature. Am J Dermatopathol. 2013 Apr;35(2):237-40. doi: 10.1097/DAD.0b013e31824c221f. PMID: 22534636.
Equestrian perniosis Resources
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Contributors: Prab R. Tumpati, MD