If the chest blisters, the most common disease is herpes zoster, herpes zoster is caused by varicella-zoster virus infection, usually occurs in the chest or chest and back, occurring on one side of the body, on the erythema can appear clusters of blisters, the patient will have significant pain, stabbing or knife-like, paroxysmal appearance, severe patients can also appear blood blisters or necrosis, etc., the patient may also have fever Patients may also have fever and other manifestations. In addition to herpes zoster, there is also contact dermatitis, such as localized adhesive tape allergy, which can also appear erythema and blisters, and the patient has significant itching. Other diseases, such as chickenpox, may also start out with blisters on the chest, which usually appear scattered and symmetrical.