Medical treatments for black toenails can vary depending on the underlying cause. Today, the nail supply expert Maryton will tell you several medical treatments for black toenails. Just keep reading! One of the first steps in treating a black toenail streak is to talk to a doctor or healthcare professional. They can diagnose the problem and discuss appropriate treatment options. Treatment options may include an assessment, diagnosis, and the use of antifungal medication to kill the fungi that are often responsible for dull and damaged nails. In some cases, surgery or excision is needed to remove the nail. This allows topical or systemic medications …