What is it?
Toenail fungus, or onychomycosis, is an infection under the surface of the nail caused by fungi. Toenail fungus often begins as an infection of the skin called tinea pedis (need link to this section). The fungus often starts under the nail fold and causes changes to its appearance, such as discoloration and thickening of the toenail.
Fungal organisms thrive in warm, moist places such as locker rooms and showers. Poor sanitary conditions during manicures and pedicures can be a source. Organisms can thrive in shoes as well.
Treatment includes trimming the layers of nail in addition to using topical or prescription oral medication and/or laser therapy. Your Doctor can diagnose the cause of toenail problem and recommend individualized treatment
Click here for additional information