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.
Other infections, such as those caused by viruses and fungi, can also cause arthritis. Viruses include: 1  Hepatitis A, B, and C. 2  Parvovirus B19. 3  Herpes viruses. 4  HIV (AIDS virus). 5  HTLV-1. 6  Adenovirus.ther infections, such as those caused by viruses and fungi, can also cause arthritis. Viruses include: 1  Hepatitis A, B, and C. 2  Parvovirus B19. 3  Herpes viruses. 4  HIV (AIDS virus). 5  HTLV-1. 6  Adenovirus.