title: Tinea cruris and tinea corporis masquerading as tinea indecisiva: case report and review of the literature.
abstract: BACKGROUND
  Tinea indecisiva is characterized by concentric scaly rings simulating tinea imbricata but caused by dermatophytes other than Trichophyton concentricum.
  
  
  OBJECTIVE
  Tinea indecisiva has been rarely reported. We report a unique case and review of the previously reported cases, pathogenesis, and management.
  
  
  METHODS
  An adult Indian man developed extensive tinea cruris and tinea corporis with concentric rings of scaly lesions over the groin, buttocks, and thighs following the use of oral corticosteroids and antifungal-steroid cream for 3 months. Mycologic and immunologic studies were performed for diagnosis.
  
  
  RESULTS
  Diagnosis of tinea indecisiva was confirmed on the appearance of "ring-within-a-ring" lesions clinically and isolation of Trichophyton mentagrophytes var. interdigitale as the etiologic agent on mycologic testing. Intradermal testing with Trichophyton extract showed fluctuating hypersensitivity responses. Four-week treatment with daily oral terbinafine resulted in complete resolution.
  
  
  CONCLUSIONS
  Tinea indecisiva should be considered in a patient with tinea imbricata-like lesions with local immunosuppression caused by a non-concentricum dermatophyte.
authors.affiliation: SKINNOCENCE: The Skin Clinic & Research Centre, Haryana, IndiaDepartments of Dermatology and STD and Microbiology, University College of Medical Sciences and Guru Teg Bahadur Hospital, University of Delhi, Delhi, India.
authors.forename: Sidharth
authors.initials: S
authors.lastname: Sonthalia
authors.affiliation: SKINNOCENCE: The Skin Clinic & Research Centre, Haryana, IndiaDepartments of Dermatology and STD and Microbiology, University College of Medical Sciences and Guru Teg Bahadur Hospital, University of Delhi, Delhi, India archanasingal@hotmail.com.
authors.forename: Archana
authors.initials: A
authors.lastname: Singal
authors.affiliation: SKINNOCENCE: The Skin Clinic & Research Centre, Haryana, IndiaDepartments of Dermatology and STD and Microbiology, University College of Medical Sciences and Guru Teg Bahadur Hospital, University of Delhi, Delhi, India.
authors.forename: Shukla
authors.initials: S
authors.lastname: Das
mesh_terms: D000293:Adolescent; D003937:Diagnosis, Differential; D005938:Glucocorticoids / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D012867:Skin / Q000382:microbiology / Q000473:pathology*; D014005:Tinea / Q000175:diagnosis* / Q000188:drug therapy / Q000382:microbiology; D014249:Trichophyton / Q000302:isolation & purification*
chemical_list: D005938:Glucocorticoids