群發性頭痛

cluster headache

variant of 群[qun2]

group / crowd / flock, herd, pack etc

to send to multiple recipients / mass mailout / to occur in a clustered fashion

to send to multiple recipients; mass mailout / to occur in a clustered fashion

to send out / to show (one's feeling) / to issue / to develop / to make a bundle of money / classifier for gunshots (rounds)

nature / character / property / quality / attribute / sexuality / sex / gender / suffix forming adjective from verb / suffix forming noun from adjective, corresponding to -ness or -ity / essence / CL:個|个[ge4]

head / hair style / the top / end / beginning or end / a stub / remnant / chief / boss / side / aspect / first / leading / classifier for pigs or livestock / CL:個|个[ge4]

suffix for nouns

to have a headache

ache / pain / sorrow / deeply / thoroughly