Video gaming star Ninja's cancer: What are the signs of Melanoma?

Fortnite gamer Ninja aka Tyler Belvins recently revealed that he was shocked to find a mole removed from his foot was melanoma, a type of skin cancer. He also said that a second dark spot is also been removed from his foot and they are hoping it is non-cancerous. The 32-year-old also said he is grateful to have detected it early and urged his followers to do skin checkups. For the uninitiated, melanoma can occur anywhere on the body. That said, it is commonly detected in areas exposed to the sun - face, neck, arms, and legs - though it can also occur in palms, soles of the feet and under nails.

Signs and symptoms 
1) Changes in the moles on your body in their size, texture, shape or colour
2) New pigments on the skin, especially if they are quickly growing
3) Pain, tenderness, itching and discomfort in any part of the body
4) Formation of sore or open wound on a mole

5) Dark pigments under nails
6) Blurry or loss of vision, visual disturbances
7) Enlarging lymph nodes (in the groin, armpit, sides of the neck, under your chin, jaw and behind your ears)