My husband has what looks like bug bites on his elbows. The sites itch and have a pus-filled center. They dry up and scab over, then more bites/welts take their place. He doesn t present other symptoms (i.e. headache, out of the ordinary joint pain, nausea, memory loss). He is 58 years old and does hunt: deer in the fall, turkey in the spring. He did have a tick bite in the fall of 2014. Thank you for your help.