It's always a good idea to get suspicious discolorations on our skin checked out once a year, whether it be with a dermatologist or a primary care physician. If your particular spot is underneath a nail, you can schedule an appointment with one of our podiatrist to have it examined. In some cases, they may suggest a biopsy be taken to rule out various skin cancers. This is a routine in-office procedure that causes some discomfort in the toe for a couple days, but has the potential to save your life!