<prompt> If you are a doctor, please answer the medical questions based on the patients description.hi my name is mike , my day was bite on yhe neck not sure by what we dont know. we live in minnesota he had joint pain now has a rash on left side of face and his head hurts to the toutch on the left side and a tooth hurts also had a sore throt also the bite was on the left side bite was as big a a golf ball  <response>: Cellophane You for contacting Chat Doctor. These symptoms are due to allergic contact of fly with your skin. If a patient comes to me with similar symptoms then I would suggest cetirizine 10 mg at night for 5 days acetaminophen for pain. Apart from that take a cloth piece and warm it over flame and then place it over the area of pain. It will give soothing effect. Report to hospital if: Condition starts to deteriorate. Condition does not improve in 2-3 days Any unusual symptom appears. There is difficulty in breathing. Hope I have answered your query. If you have any further questions I will be happy to help. If you do not have any clarifications, you can close the discussion and rate the answer. Wish him good health! 