Dermatophyte infections (ringworm) are extremely common also usually caused by fungi of the Microsporum, Trichophyton and Epidermophyton species.
Furthermore, The fungi can originate from soil (geophilic) or animals (zoophilic), or be confined to human skin (anthropophilic).
In detail, Dermatophyte infections usually present with skin(tinea corporis), scalp (tinea capitis), groin (tinea cruris), foot (tinea pedis) also nail (onychomycosis) involvement. [1]
Besides this, It is called ringworm because the itchy, red rash has a ring-like appearance.
However, ringworm is nothing to do with worms.
It can affect different parts of the body.