how long do cluster shutdowns last?
Headaches with 180+ answers. Cluster headache generally lasts 20-40 minutes. Rarely, they can last as long as two hours. Unless Migraine is also in the picture. Fortunately, Cluster Headache is very rare. Unfortunately, Migraine is not. Perhaps 20-25% of people have susceptibility genes for Migraine. For those people with both issues, Cluster attacks tend to trigger subsequent Migraine attacks.