- Superficial infection of the feet caused by dermatophytes
- Most common dermatophyte infection encountered in clinical practice; contagious
- Often accompanied by tinea manuum, tinea unguium, and tinea cruris
- Clinical forms: interdigital (most common), hyperkeratotic (moccasin type), vesiculobullous (inflammatory), and rarely ulcerative
- System(s) affected: skin/exocrine
- Synonym(s): athlete’s foot, foot ringworm
- Predominant age: 20 to 50 years, although can occur at any age (1)
- Predominant gender: male > female
4–10% of population
Rare in younger children; common in adolescents
Elderly are more susceptible to outbreaks because of immunocompromised and impaired perfusion of distal extremities.
Etiology and Pathophysiology
Superficial infection caused by dermatophytes that release enzymes called keratinases to invade and thrive only in nonviable keratinized tissue
- Trichophyton interdigitale (previously Trichophyton mentagrophytes) (acute)
- Trichophyton rubrum (chronic): most common
- Trichophyton tonsurans
- Epidermophyton floccosum
No known genetic pattern
- Hot, humid weather
- Occlusive/tight-fitting footwear
- Prolonged application of topical steroids
- Good personal hygiene
- Wearing rubber or wooden sandals in community showers, bathing places, locker rooms
- Careful drying between toes after showering or bathing; blow-drying feet with hair dryer may be more effective than drying with towel.
- Changing socks and shoes frequently
- Applying drying or dusting powder
- Applying topical antiperspirants
- Putting on socks before underwear to prevent infection from spreading to groin
Commonly Associated Conditions
- Tinea manuum/unguium/cruris/corporis
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Domino, Frank J., et al., editors. "Tinea Pedis." 5-Minute Clinical Consult, 27th ed., Wolters Kluwer, 2020. Medicine Central, im.unboundmedicine.com/medicine/view/5-Minute-Clinical-Consult/116605/all/Tinea_Pedis.
Tinea Pedis. In: Domino FJF, Baldor RAR, Golding JJ, et al, eds. 5-Minute Clinical Consult. Wolters Kluwer; 2020. https://im.unboundmedicine.com/medicine/view/5-Minute-Clinical-Consult/116605/all/Tinea_Pedis. Accessed May 28, 2023.
Tinea Pedis. (2020). In Domino, F. J., Baldor, R. A., Golding, J., & Stephens, M. B. (Eds.), 5-Minute Clinical Consult (27th ed.). Wolters Kluwer. https://im.unboundmedicine.com/medicine/view/5-Minute-Clinical-Consult/116605/all/Tinea_Pedis
Tinea Pedis [Internet]. In: Domino FJF, Baldor RAR, Golding JJ, Stephens MBM, editors. 5-Minute Clinical Consult. Wolters Kluwer; 2020. [cited 2023 May 28]. Available from: https://im.unboundmedicine.com/medicine/view/5-Minute-Clinical-Consult/116605/all/Tinea_Pedis.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - Tinea Pedis ID - 116605 ED - Domino,Frank J, ED - Baldor,Robert A, ED - Golding,Jeremy, ED - Stephens,Mark B, BT - 5-Minute Clinical Consult, Updating UR - https://im.unboundmedicine.com/medicine/view/5-Minute-Clinical-Consult/116605/all/Tinea_Pedis PB - Wolters Kluwer ET - 27 DB - Medicine Central DP - Unbound Medicine ER -