As if having nail fungus isn’t enough of a nuisance already.  It can get a lot worth if not treated in the early stage, especially for people that have diabetes, and other auto immune diseases.  Having nail fungus can also have a more serious effect on people on medications. Nail fungal infections can be painful and may cause permanent damage to your nails as well as lead to other serious infection that can spread beyond our feet. Fungal infections of the nail pose the most serious health risk for people with diabetes and for those with weakened immune systems, such as people with leukemia or those who’ve had an organ transplant. If you have diabetes, your blood circulation and the nerve supply to your feet can become impaired. Therefore, any relatively minor injury to your feet — including a nail fungal infection — can lead to a more serious complication, requiring timely medical care. See your doctor immediately if you suspect nail fungus.