my husband has a few dark spots on his back. They are irregular in shape. One of them is bothering him, he said the other day it felt like a bug on his back. Now he says when his shirt hits it, it feels like sunburn. It is about the size of a nickle, not round though and in two longish strips, but irregular not smooth boarders. I had made him an appointment with a dermatologist for November 11, should I get him in sooner? He is 63 years old and African American/White decent. So his skin is darker, but not super dark, but spots are darker than his skin.