My boyfriend has a lot of moles, but there is one on the back of his neck that scares me. it is about the size of a pencil eraser, sticks out, and is pretty symmetrically round. I am scared though because it is brown with another dark shade of brown in it ... so it is kind of 2 colors throughout. He tells me he is fine, he's had it all his life, and I don't know if it has changed, as my HA was not this bad before ... but he won't get it checked out and I am scared he has melanoma and it will spread in the time he is refusing to go! If somebody could respond quickly that would be great ... I need to stop worrying :(