The main causes of neuralgia in the elderly are the following: 1. The incidence of diabetes is very high in the elderly, and almost all patients with a history of diabetes for more than 10 years will develop peripheral neuropathy, and patients can develop neuralgia, with stabbing and burning pain as the main manifestation. 2. Herpes zoster, post-herpetic neuralgia is also very common in the elderly. Postherpetic neuralgia is more intense in nature, mostly knife-like or electric shock-like pain, which is often unbearable for patients.3. Peripheral neuritis, this type of neuralgia is mostly symmetrical and can be accompanied by sensory abnormalities.4. Mononeuralgia includes sciatica, lateral femoral dermatomal neuritis, etc. The neuralgia in these patients is mostly radicular in nature.5. Exertion, cold, staying up late, and emotional stress are also common causes of neuralgia.