I have had an incredibly itchy spot on my arm for ages, it looked like the skin was changing and flaking off. After a month of ignoring it (and going 'la la la it's not happening') I freaked and went to the doc's. My GP who said it was fine but sent me to the surgery's 'skin guy'. He looked at it under a little ultraviolet light and pronounced it not to be cancerous.
That was six months ago and it's been itchy ever since. And in the last two days (literally, 48 hours) it's come up as a mole, a proper (light) brown one. I am not a moley person, I only have two others. I am very 
Should I freak out again or trust the skin guy and his little light?