my son has a painful lump on his testicle and has tried squeezing it but only blood comes out, he also has what looks like a red sore bite on his chest, which doesn't have puss in it, and his chest, stomach, neck and back are covering in tiny spots which he thinks are bites but just look like a rash. he is 23 years old and very angry and upset because he doesn't know what is happening to him.