The causes of bug bites with a circle of bumps include mosquito bites, bee bites, scabies bites, cryptococcal dermatitis, etc. Treatment includes medication and physical therapy. 1. Mosquito bites: If mosquito bites cause bumps, then you can give glucocorticoid soft such as Dinaid cream, mometasone furoate cream and other application of anti-itch treatment. 2. Bee stings: If the bumps are caused by bee stings, then you can give a lot of soap and water to wash the treatment. 3. Scabies bites: For scabies bites, sulfur ointment can be given to kill scabies. 4. Cryptocoryne dermatitis: If it is cryptocoryne dermatitis, then you need to give 5% sodium bicarbonate solution wet compress treatment. If the itching is obvious in all the above cases, anti-allergy drugs such as loratadine can be given if necessary. In severe cases, oral hormonal drugs, such as prednisone, can be taken under medical supervision. If there is secondary infection, anti-infective drugs should be used in combination. Bug bites a circle of goosebumps recommended to go to the regular hospital in a timely manner by a professional doctor for standardized diagnosis and treatment, the above drugs need to comply with the doctor’s instructions.