Headaches caused by thinking too much are mostly caused by tension headache, migraine, insomnia and other factors. 1. Tension headache: it occurs in young and middle-aged women. Anxiety, excessive pressure, overthinking and mental stimulation are the triggering factors of this disease. The onset of headache can be unilateral or bilateral, usually persistent dull pain, accompanied by dizziness, photophobia, insomnia and other symptoms. 2. Migraine: Migraine can be triggered by stress, tension, emotional instability and excessive thinking. Migraine headache can be induced by stress, tension, emotional instability and excessive thinking. It is characterized by throbbing headache on one side or both sides of the head. It can also be accompanied by nausea, vomiting, stomach upset, blurred vision and other symptoms. 3. Insomnia: prolonged overthinking may lead to insomnia, difficulty in falling asleep, etc., which may also cause headaches. To summarize, when thinking too much headache, it is recommended to actively adjust the mindset and emotions, when the symptoms are more serious, it is recommended to consult a doctor in a timely manner, and follow the doctor’s advice and active treatment.