What causes discoloration and thickness to toe nails?

Fungal infection: Usually due to fungus of nails.

Fungal infection: While a fungal infection is a likely cause of thickening and discoloration of toenails, there are several other possible causes. These include: psoriasis, lichen planus, poor circulation, inherited or acquired nail dystophies, and others.

Many possibilities.: Some causes of nail discoloration include trauma due to tight shoes, infection, and medication side effects. You should try wearing shoes with a higher wider toe box. Get the feet inspected by a professional to determine the cause of the problem, as treatment varies depending on the diagnosis.

Depends: I have seen many patients with nail thickening that do not have fungus... however most people with fungus do have thicker nails! Check with a specialist for the best diagnosis and treatment!