scab. 1  An incrustation over a sore, wound, vesicle, or pustule, formed during healing. 2  The mange, especially when it appears on sheep. 3  Any of several different diseases of potatoes producing pits and other damage on their surface, caused by streptomyces bacteria (but formerly believed to be caused by a fungus).
Diabetes complications from fungus infections in the toenails and fingernails can lead to amputations of the entire limbs. To understand how serious fungal toenails can be to a diabetic, you must first understand how diabetes affects the body.
When Is a Transtibial Amputation Needed? Transtibial amputations are necessary when the leg below the knee is severely damaged and interferes with your quality of life. In many cases, amputation is necessary to keep the problem from spreading to the rest of your body.