A few people may not have any conscious symptoms before the appearance of shingles, some will have systemic symptoms such as fever and fatigue, and the affected skin may have abnormal sensations such as burning sensation or pain in advance, while some people may have some special prodromal symptoms due to individual differences and different types of shingles, commonly as follows: 1. systemic symptoms: patients may have fever performance, generally with body temperature Local skin pain: The affected skin may also have painful sensations, such as tingling, throbbing, burning pain or paroxysmal electric shock pain, etc.; 3. There are also facial herpes zoster with toothache as a precursor. Usually these symptoms can last for 1-5 days, and after the precursor, a rash can appear in certain areas of nerve distribution. Once these conditions occur, we need to identify the cause promptly, as early treatment may help to reduce the severity of symptoms or reduce the risk of associated complications.