A brown or dark stripe or path on the nail, or browning onto the cuticle or skin around the nail may be a sign of melanoma and should be taken seriously, especially if it's spreading to the skin.
|Dr. Miguel Cunha
If the brown strip or discoloration extends into your toenail bed or skin, see a podiatrist or doctor right away. In addition to melanoma, brown stripes or patches on toenails could also be a sign of HIV or lupus, podiatrist Miguel Cunha, DPMsaid.
Source: Marguerite Ward, Today (NBC) [3/22/19]
Courtesy of Barry Block, editor of PM News.
Brought to you by Doctor John A. Hardy, owner of Toronto's foot clinic, Academy Foot and Orthotic Clinics.