Well I have the same problem to I went to a derm they toled me its from the sun or it also could be hormons if your a women that could be a problem spots are not cancer cancer has slight raised surface or even a mole could be cancer but if it isnt raised its probabaly nonthing but disscoloration of the skin I cover mine up with cover up bec... more

Thank you very much for your advice I called a doctor and got checked out and found out my splean and liver were englarged from a infection so I wanted to thank you very much because I probably wouldnt of even got checked out because I thought maybe my nerves were causing it but thanks again for your reply it really helped me

Well it depends how long the blood was on the knife if it was dry blood your safe because dry blood kills the hiv infection needles are different because no air gets up in that needle to kill the virus I learned this from my aunt she works in boston hospital in the blood lab