What is the reason why I have a headache in rainy or humid weather?

According to my observation, you are likely to suffer from migraine. Migraine attacks are often related to high temperature, humidity, rainy weather and low air pressure. Headache attacks often have some direct inducing factors, such as mental stress, fatigue, lack of sleep, stimulation of sound, light and chemical smell. People with family history, in particular, should consciously avoid these factors, keep the law of life, make reasonable arrangements for diet, sleep, study and cultural life, do not exercise excessively, and eat less food containing tyrosine, such as cheese and chocolate. Although the weather conditions are difficult to control, we can still try to avoid them, such as avoiding direct sunlight.