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.
Patients with diabetes have a 30-fold higher risk of lower-extremity amputation due to infection compared with patients without diabetes.1 , 2 Diabetic foot infections that are not appropriately treated because of delayed diagnosis or that are inadequately treated lead to lower-extremity amputation in approximately 10 % of patients.3 , 4 ...