Andrew Huberman· PhD
cluster type headaches are associated with a bunch of very uncomfortable symptoms again they tend to be unilateral they tend to begin very deep and they tend to be excruciatingly painful excruciatingly painful they can last anywhere from 30 minutes to three hours some people experience these in sleep in fact this is one of the cases where men experience a headache more than females men experience cluster type headaches that have a sudden onset during sleep at five times the frequency than do females the other symptom that's quite common in cluster type headache is a droopy eyelid which should make sense because the trigeminal innervates the eye region and there are other nerves that control the eyelid but they're in that General region and they can be impacted the other thing is something called meiosis which is that you can't dilate the pupil I mentioned this before so those your pupils might get really really small and they won't dilate and the other thing is lacrimation tearing and then nasal discharge all because of a neural inflammation problem