Tinea nigra is a very rare fungal infection. It causes dark spots on the bottom of the feet, the palms of the hand, or, on rare occasions, the torso. These may be black or brown. A type of yeast ...

Psoriasis on the feet usually appears as pink-red or dark brown patches on the bottom of your feet. The skin may be itchy, raised, and thick. How it’s treated ...

In some instances, subtle signs of high blood sugar may surface on the side of the feet and forearms. By Solen Le Net 10:25, Mon, Nov 15, 2021 | UPDATED: 10:26, Mon, Nov 15, 2021 ...