Growing blisters on the body may be related to herpes zoster, erythema multiforme and pemphigus. 1. Herpes zoster: when the body resistance drops, the varicella-zoster virus latent in the body is activated. It causes blisters on the skin distributed along the unilateral peripheral nerves as well as systemic symptoms such as low-grade fever and loss of appetite. 2. Erythema multiforme: It may be caused by herpes simplex virus infection or physical factors, resulting in acute dermatitis of the local skin. When the disease is mild, erythema will appear, and with the development of the disease, large blisters and blood blisters will appear. 3. Pemphigus: It is an autoimmune chronic herpetic dermatosis caused by the loosening of epidermal cells, resulting in the appearance of large blisters on the chest and back, head and other parts of the body. The blisters on the body can also be seen in other causes, it is recommended to consult a doctor in a timely manner, follow the doctor’s instructions for the relevant examination, with the help of the doctor to clarify the nature, and targeted treatment or treatment.