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 ...

Seed warts can form on the bottom of your feet. For this reason, some seed warts flatten over time due to walking, standing, or running. These warts can also develop on the base of your toes or on ...

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 ...

"The spots that developed on the bottom of this patient’s foot are also a sign of a heart infection called infective endocarditis. Unlike Osler nodules, these spots are painless.