Hello. Thank you for writing to us I would like to rule out a possibility of herpes zoster. It is due to varicella zoster virus/ VZV. The same virus causes chicken pox in childhood and once acquired persists inside body for the rest of life. It may later reactivate to form zoster lesions. Lesions of zoster are distributed on one side of the body are usually localized to a portion of body/ dermatome. The lesions are fluid filled vesicles on a background of erythema and may get easily confused with an insect bite. I suggest that you visit a dermatologist for a confirmatory diagnosis and appropriate treatment. Treatment of zoster is entirely different from that of an insect bite,therefore confirmation of diagnosis is absolutely important. A confirmed zoster episode can be treated with Oral antiviral e.g either acyclovir or valacyclovir. Regards