Above: melanoma can appear in the eye and often causes no symptoms until its later stages.
6. Vision problems
While most melanoma appears on the skin, it can also occur in unexpected places such as your eyes. Called ocular melanoma, or OM, melanoma in your eye often causes no symptoms until its later stages. Having routine eye exams is the best way to catch OM as early as possible.
Ocular melanoma is the most common primary cancer of the eye in adults. As it progresses, it can cause symptoms like blurry vision, increasing numbers of floaters (tiny, squiggly lines that move across your field of vision), or an unusual dark or discoloured spot near the iris. OM tends to become more prevalent with age.
7. Changes in your fingernails or toenails
Skin cancer can develop anywhere on your skin, including the skin under your fingernails and toenails. Most commonly, melanoma appears as a dark spot or streak below the nail, although this can also be a sign of a fungal infection, so get it checked if you’re not sure.
If you wear nail polish regularly, check your nails between applications to look for discolouration or other changes, and always remove your nail polish before having a MoleMap or other skin cancer screening.