A burning sensation on one side of the body may be caused by an allergic reaction or herpes. 1. Allergic reaction: burning sensation on the skin is usually a normal reaction to skin allergies, if the skin comes into contact with allergens, capillary dilation will occur, which may result in a burning sensation. You should seek timely medical examination to clarify the allergens, usually common anti-allergy drugs are paracetamol, loratadine tablets and so on. 2. Herpes: burning sensation of the skin, may be localized viral infection caused by herpes, it is recommended to pay attention to personal local hygiene, you can apply some acyclovir ointment. Usually pay attention to the diet list, eat more fresh vegetables and fruits, pay attention to the regularity of life and rest, pay attention to personal hygiene, often take a bath, often change clothes and bedding.