Now we really confirmed that these red marks are due to skin cancer. We will try to consult skin care doctor.
Hello,
The red marks that your friend has had for so many years is unlikely to be skin cancer which changes and grows in such a considerable period of time. If the marks have not changed then there is nothing to worry.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing