All skin lesions/growths need to be checked out, initially by your GP, who will refer you on to a Dermatology specialist if needed. Our practise Nurse actually sent me to my GP for a check on a lesion on my arm which I had just assumed to be eczema. He referred me on, and to cut a long story short, it turned out to be a stage 1A Melanoma.. the nasty one. They also discovered 2 more lesions, one on my other arm and one on my back which turned out to be Basal Cell Carcinomas. .still skin cancer, but easily treated. Fortunately all is now well after surgery two years ago, but I could have been in big trouble if the Melanoma had not been picked up early. Get yourself checked out.