If the elderly are in good condition, the course of herpes zoster is 7-15 days, and those in poor condition need 20-30 days or more, as follows: 1, the body immunity: if the elderly are usually strong and rest and sleep properly, usually the course of the disease in 7-15 days to achieve improvement or cure effect, if the elderly are weak and sickly and rest and sleep irregularly, usually the course of the disease at least 20 days or more; 2 If an elderly person has only mild hypertension or hyperlipidemia, the disease can be controlled or cured within 15 days. If the elderly have serious medical diseases, such as cerebral thrombosis, severe diabetes, the course of the disease usually takes at least one month.