Herpetic pain is characterized as follows: 1. Herpetic pain is persistent, accompanied by burning-like sensation, soreness and itching, severe paroxysmal stabbing or burning pain, abnormal sensations such as electric shock-like and ant bite sensations; 2. Intense and persistent pain. Pain can continue to occur after the herpes zoster lesions are eliminated, and pain can be induced by milder irritation, sometimes with indirect pain throughout the night; 3. In 10% of patients, the pain can last for more than a month, and if treatment is untimely or inappropriate, pain can continue to occur after the herpes disappears, even for more than a few decades.