Common types of thick toenails include onychomycosis (a type of nail infection), onychauxis (a form of nail overgrowth), and onycholysis (when the nail separates from the nail bed). Onychomycosis ...

Thickened and discolored toenails can be caused by a variety of issues, from ill-fitting shoes or trauma from stubbing your toe, to aging and psoriasis (a chronic skin condition). Often, though, ...

If two bones or joints are pressed close together, this may cause the skin to thicken and result in a corn. This might also happen if the little toenail irritates the skin and, if the nail is long ...

Often, though, they're caused by a fungal infection. These infections most often affect the toes, causing nails to thicken, crumble and become discolored. The effect isn't just cosmetic ...