Why do cluster headache sufferers get short of breath?

It's not common: I haven't seen shortness of breath as a common complaint among my cluster patients. It should be evaluated as a separate symptom.

Not usually: Cluster headaches doesn't usually cause shortness of breath. You may want to consult your pcp or a pulmonologist so you aren't missing something.

See below: The person with the cluster headache may be breathing faster due to the severe pain but should not be short of breath.