Hi there Peter. Off the cuff, going by your description, it does not suggest any cancer to me. Do you have a strong family history of skin cancer? When the 'pimple' was removed, was it sent for biopsy
& histopathological analysis? If you live in the interiors, you may want to get the area in question photographed & put it up online & you may consult me privately online through this portal. routine blood tests or an xray may not help much in the diagnosis or exclusion of skin cancers. There is a technique to 'map' these lesions using a simple loupe that can be done in the remote areas & when you are down at a tertiary hospital, you could go in for more advanced mapping techniques. Your time in the sun, may be contributory & suggest at least from here on, please do make sure you use a good sunscreen as prescribed & avoid tanning
. The stinging can be a 'paraesthesia' that may get better with the simple use of a counter-irritation cream used for pain/sprains eg Deep Heat if in the outbacks & dont have access to much. Take care & trust this helps..cheers..Dr praveen Rodrigues MD Dermatologist
, venereologist & Cosmetologist, Bangalore, India.