If someone has foot fungus and toenail fungus for years, what other side effects can occur with in the body?

Spread to hands: This is not a systemic issue, meaning it is not in your blood and does not spread through out your body and lead to serious illness. It may infect the palms of your hands. The infection can be spread to other family members through contact.

None: The most common fungus to have an effect on the toenails can not enter the blood stream and spread throughout the body in any way.

None: Nail fungus is caused by a type of fungus called a dermatophyte. Other than also causing athletes foot, there are few internal medical concerns. That's not to say you shouldn't treat them. Thick fungus nails can cause pain and bacterial infection, especially in diabetics or patients with poor circulation.