With cluster headaches, patients usually experience severe swelling or drilling pain in the head, tearing, sweating and nasal congestion. Cluster headache is one of the more severe symptoms of all headaches and is one of the vascular headaches. Most attacks occur without aura, and the headache is fixed around or behind one eye, accompanied by conjunctival congestion on the same side, drooping eyelids, tearing, sweating and nasal congestion, and in a few patients, nausea and vomiting may occur. Attacks occur at about the same time each day, and the pain is persistent and sharp. Cluster headaches typically last for weeks to months before resolving, and usually occur 1 to 2 times a year, with some patients experiencing a distinct seasonal onset, prevalent in spring and fall. It may be related to vascular dysfunction, and the severe pain can lead to irritability, affecting normal life and work, and may also affect the visual system. It is recommended that patients with the above symptoms go to the hospital in time to avoid delaying the condition and causing adverse consequences.