Perianal dermatoses

Last updated: July 26, 2022

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This article covers various dermatoses that can manifest in the perianal area, including allergic contact dermatitis, seborrheic dermatitis, erythrasma, psoriasis, and candidiasis.

For more information on each condition, see the respective articles.

Overview of perianal dermatoses
Condition Etiology Characteristics of the rash Treatment
Allergic contact dermatitis
Irritant contact dermatitis
  • Heavy metals
  • Strong acids and alkalis
  • Water
  • Soaps
  • Detergents
Seborrheic dermatitis
Streptococcal dermatitis
Hailey-Hailey disease
  • Loss of function in the ATP2C1 gene
Lichen sclerosus
  • Severely pruritic white, polygonal papules and plaques
  • Well-defined borders that are potentially surrounded by a red inflamed halo

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