Dermatophyte – Tinea pedis

  • Tinea pedis is dermatophyte infection of the feet.
  • Its distribution is International-wide, however more common in nations the place there’s
    able get admission to to communal sports activities or bathing facilities.

Causal organisms:

  • Trichophyton rubrum is the most common cause.
  • Epidermophyton floccosum and T. mentagrophytes var.interdigitale are also seen.
  • Not unusual condition often reduced in size via strolling barefoot
    on contaminated floors.
  • Extensive sweating and occlusive sneakers predispose to
    the condition.
  • Infection with the moulds Scytalidium dimidiatum (Hendersonulatoruloidea) and S. hyalinum is clinically indistinguishable.

Clinical manifestations:
3 types are recognized:

  • acute or chronic interdigital infection: itching, peeling,
    maceration and fissuring of toe webs
  • chronic hyperkeratotic (moccasin or dry type): high quality, white
    scaling restricted to heels, soles and lateral borders of toes
  • vesicular (inflammatory) infection: vesicle formation on
    soles, instep and interdigital cleft. Secondary bacterial or yeast infection is also possible.

Diagnosis:

Microscopy

  • Direct microscopy of pores and skin scrapings softened with KOH unearths
    branching hyphae without or with arthrospores.

Culture

  • Isolation of the dermatophyte at 28°C permits identification.
Tinea pedis - Feet Dermatophyte infection

Tinea pedis – Feet Dermatophyte infection


Image Source: tipfak.com

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