Patients have headache symptoms when it rains, the reasons may be the following: 1. Consider that it is because the rain causes the patient to have a neuropathic headache attack, because the weather is cooler when it rains, which may cause the fascia of the patient’s head to be stimulated to a certain extent, and the vasoconstriction makes the tension increase, causing the patient to have headache symptoms. 2. Consider that it is caused by neuropathic headache, which is usually caused by the change of weather, the cold of the head, etc. 3, 3. From the perspective of traditional Chinese medicine, the symptoms of headache when it rains are related to the personal constitution of the patient, the patient may belong to the constitution of phlegm and dampness, and the rainy weather may cause the patient’s head to be cooled, and the pain will occur when the blood stagnates and does not pass.