What Can Cause A Black Toenail?

Kidney Disease

Kidney disease can occur in either one or both kidneys. The kidneys are essential for many functions of the body, including urinating and regulating the amount of potassium, salt, and pH levels in the body. When the kidneys have become damaged because of kidney disease, they may be unable to perform the normal functions they're supposed to. The most common type of this disease is chronic kidney disease, which is a long-term issue usually brought about by high blood pressure. The kidneys will continue to worsen until dialysis is necessary. If the kidneys stop functioning altogether, patients may need to obtain a kidney transplant. Because of how many functions the kidneys are used for, the worsening of these functions means certain nitrogenous waste products can build up in areas of the body like the toenails, which causes them to blacken.

Learn more about the causes of black toenails now.