Ulcers, which are open sores in the skin, occur when the outer layers of the skin are injured and the deeper tissues become exposed. They can be caused by excess pressure due to ill-fitting shoes, long periods in bed, or after an injury that breaks the skin. Ulcers are commonly seen in patients who have

The most common cause of yellow discoloration in the toenails is a fungal infection. The fungus often develops underneath the nail, resulting in it becoming thick, raised, and yellow in color. Other potential causes for yellow discoloration of the nail include diabetes mellitus and lymphedema (chronic