My son has a sore on his leg, not sure what it is?

Using this site: To get the most from this site you need to describe your health issue with detail.This would include a description of the sore, like size, color, raised or flat, blister , drainage, etc. and then ask a question. Just saying there is a sore with no description leaves nothing to decide on a potential cause or treatment. You are welcome to start over. Your posts are not linked,each must be complete