II. Pathophysiology

  1. Often associated with Tinea Pedis
  2. Groin inoculated with patient's hands

III. Etiology (same as Tinea Pedis)

  1. Trichophyton rubrum
  2. Trichophyton mentagrophytes
  3. Epidermophyton floccosum

IV. Epidemiology

  1. More common in teen and young adult males
  2. Also common in teen females who are Overweight or wear occlusive clothing

V. Signs

  1. Distribution
    1. Bilateral thighs
    2. Inguinal folds
    3. Buttocks
  2. Spared areas: Scrotum and penis
    1. Suspect Cutaneous Candidiasis if involved
  3. Characteristics
    1. Asymmetric erythematous annular Plaques
      1. Scaling
      2. Central clearing
    2. Occasional Papules or Vesicles

VI. Differential Diagnosis

VII. Management

  1. Treat concurrent Tinea Pedis if present
  2. Topical Antifungal cream bid for 2-4 weeks
    1. Technique
      1. Apply to normal skin 2 cm beyond affected area
      2. Continue for 7 days after symptom resolution
    2. First line: Imidazoles (e.g. Clotrimazole)
    3. Refractory cases: Naftin, Lamisil, Loprox, Mentax
  3. Loose fitting clothes, boxer shorts
  4. Powders to reduce moisture
  5. Antibacterial soap

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Related Studies

Ontology: Tinea cruris (C1384589)

Concepts Disease or Syndrome (T047)
ICD10 B35.6
SnomedCT 240697008, 59089002, 266216007, 186989008, 399029005
English Hebrae, tinea cruris, tinea cruris (diagnosis), Ringworm of groin, Groin tinea, Groin ringworm, Dhobi itch, jock itching, Itching;jock, itching jock, Tinea cruris, Ringworm of genitocrural region, Tinea of groin, Tinea inguinalis, Tinea cruris (disorder), cruris; tinea, dhobi itch, dhobi; itch, eczema; marginatum, groin; ringworm, itch; dhobi, itch; jock, jock; itch, marginatum; eczema, ringworm; groin, tinea; cruris, Dhobie itch, Eczema marginatum, Jock itch, jock itch
Italian Dermatofitosi inguinale, Tigna dell'inguine, Tinea cruris, Tinea inguinale
Dutch schimmelinfectie in kruis, ringworm van lies, liestinea, cruris; tinea, dhobie; itch, eczeem; marginatum, itch; dhobie, itch; jock, jock; itch, lies; ringworm, marginatum; eczeem, ringworm; lies, tinea; cruris, Tinea cruris, tinea cruris
French Teignes de l'aine, Eczéma marginé de Hebra
German Mykose der Leistenbeuge, Ringwurm der Leiste, Tinea cruris
Portuguese Tinha inguinal, Coceira de desportista, Tinha crural
Spanish Tiña de la ingle, Tiña en braguero, Tiña inguinal, eczema marginado, tiña cruris (trastorno), tiña inguinal, prurito inguinal, tiña de la ingle, prurito dhobie, eccema marginado, tiña cruris, tiña crural (trastorno), tiña crural, Tiña crural
Japanese 鼡径部白癬, いんきんたむし, 股部白癬, インキンタムシ, ソケイブハクセン, コブハクセン
Czech Plísňové onemocnění v třísle, Plísňová infekce slabin, Tinea cruris, Tinea inguinalis
Korean 완선증
Hungarian Tinea cruris, Lágyék bőrgombája, Lágyék trichophytosis, tinea cruris