Please can anyone give me advice, I had malignant melanoma which was successfully removed 7 years ago, but I do have to have yearly checks at the dermatology dept in hospital as I have a large amount of moles, I also have to self check monthly and the usual avoid the sun. I am in receipt of disability pip for another reason but initially when I applied I mention the melanoma but it was kind of dismissed and not put on my pip record, on reading things on the Internet should I inform pip that I have had it and have been told there is a high chance it will reoccur and I have annual checks? 
where is was removed on my back along the left mid area it does on occasions fell pinchy when I reach up. Is it classed as a disability?