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Tinea cruris in Child
See also in: Cellulitis DDx,Anogenital
Other Resources UpToDate PubMed

Tinea cruris in Child

See also in: Cellulitis DDx,Anogenital
Contributors: Susan Burgin MD, Kudakwashe K. Maloney MD, MPhil
Other Resources UpToDate PubMed


Tinea cruris (jock itch) is a superficial fungal infection of the skin of the groin area, most commonly caused by Trichophyton rubrum or other dermatophytes. Tinea cruris manifests as a symmetric erythematous rash on the inner thighs and the crural folds. It is frequently pruritic. People at higher risk include those who have diabetes mellitus, are obese, recently visited a tropical climate, wear tight-fitting or wet clothes (including bathing suits) for extended periods, share clothing with others, or participate in sports. It is often spread to the groin from a fungal infection of the feet (tinea pedis).

Tinea cruris is more common in postpubertal males. It rarely spreads to the penis, but if it does, it will be found only at the base of the penis.

Tinea cruris can be differentiated from cellulitis based on the location and the presence of scaling. In contrast to cellulitis, tinea cruris often occurs bilaterally.

In the immunocompromised patient, pruritus may be absent. There is an increased risk of all dermatophyte infections (tinea pedis, cruris, corporis, and faciale as well as Majocchi granuloma) in immunocompromised individuals.

A severe antifungal-resistant tinea has emerged in South Asia from the rapid spread of a novel dermatophyte species: Trichophyton indotineae. Terbinafine-resistant T indotineae infections have been reported in Asia, Europe, Canada, and the United States, including one case in New York City with no history of recent international travel.


B35.6 – Tinea cruris

399029005 – Tinea cruris

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Differential Diagnosis & Pitfalls

  • Allergic contact dermatitis
  • Irritant contact dermatitis
  • Erythrasma
  • Hailey-Hailey disease (Hailey-Hailey disease)
  • Intertrigo
  • Cellulitis or Erysipelas
  • Psoriasis (Inverse psoriasis)
  • Cutaneous Candidiasis
  • Lichen simplex chronicus
  • Pemphigus vegetans
  • Extramammary Paget disease
  • Glucagonoma syndrome
  • Genital wart
  • Lymphogranuloma venereum
  • Granuloma inguinale
  • Squamous cell carcinoma in situ
  • Scrotal favus is a rare dermatosis that presents with thick, white, cup-shaped scales on the scrotum. Most cases of scrotal favus are due to Nannizzia gypsea (previously known as Microsporum gypseum) and Trichophyton rubrum. Scrotal favus may co-exist with tinea cruris.

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Last Updated:05/24/2023
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Patient Information for Tinea cruris in Child
Contributors: Medical staff writer
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Tinea cruris in Child
See also in: Cellulitis DDx,Anogenital
A medical illustration showing key findings of Tinea cruris : Erythema, Female genital, Fine scaly plaque, Male genital, Thigh, Inguinal region, Pruritus
Clinical image of Tinea cruris - imageId=6035594. Click to open in gallery.  caption: 'An erythematous plaque with peripherally accentuated fine white scale on the upper inner thigh.'
An erythematous plaque with peripherally accentuated fine white scale on the upper inner thigh.
Copyright © 2024 VisualDx®. All rights reserved.