Fungal Skin and Nail Infections Are Rooted in the Colon – The Trichophyton Story

Majid Ali, M.D.

The terms fungi, molds, and yeast all refer families of microbes, and are used interchangeably. Trichophyton is the term used for a family of molds that cause skin and nail infections, including tinea, ring worm, nail fungal infections (onycomycosis),, athelete foot, and related infections. Dermatophytosis is another generic term for skin infections caused by fungi.

Treatment of Fungal Skin and Nail Infections

I do not consider treatment of any fungal skin and nail infections complete without addressing the issues of yeast/fungal overgrowth in the alimentary tract because that is where the fungal reserves are. For more info, please consider free Dr. Ali’s Bowel course.”

Below I include some text on the subject from Wikipedia with live links for additional information for the reader..

The anthropophilic varieties cause forms of dermatophytosis, that is, fungal infection of the skin. They are keratinophilic: they feed on the keratin in nails, hair, and dead skin.

Trichophyton concentricum causes “Malabar itch”, a skin infection consisting of an eruption of a number of concentric rings of overlapping scales forming papulosquamous patches.[2]

Trichophyton rubrum and Trichophyton interdigitale cause athlete’s foot (tinea pedis), toenail fungal infections (aka tinea unguium, aka onychomycosis), crotch itch (aka tinea cruris), and ringworm (a misnomer, as there is no worm involved; it is also known as tinea corporis). The fungi can easily spread to other areas of the body as well and to the host’s home environs (socks, shoes, clothes, showers, bathtubs, counters, floors, carpets, etc.).

They can be transmitted by direct contact, by contact with infested particles (of dead skin, nails, hair) shed by the host, and by contact with the fungi’s spores. These fungi thrive in warm moist dark environments, such as in the dead upper layers of skin between the toes of a sweaty foot inside a tightly enclosed shoe, or in dead skin particles on the wet floor of a communal (shared) shower. Their spores are extremely difficult to eliminate, and spread everywhere.


Trichophyton is a genus of fungi, which includes the parasitic varieties that cause tinea, including athlete’s foot, ringworm, jock itch, and similar infections of the nail, beard, skin and scalp. Trichophyton fungi are molds characterized by the development of both smooth-walled macro- and microconidia. Macroconidia are mostly borne laterally directly on the hyphae or on short pedicels, and are thin- or thick-walled, clavate to fusiform, and range from 4 to 8 by 8 to 50 μm in size. Macroconidia are few or absent in many species. Microconidia are spherical, pyriform to clavate or of irregular shape, and range from 2 to 3 by 2 to 4 μm in size.

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