<unk>  (ON) is a painful condition affecting the posterior head in the distributions of the greater<unk>  nerve (GON), lesser<unk>  nerve (LON), third<unk>  nerve (TON), or a combination of the three. It is paroxysmal, lasting from seconds to minutes, and often consists of lancinating pain that directly results from the pathology of one of these nerves. It is paramount that physicians understand the differential diagnosis for this condition and specific diagnostic criteria. There are multiple treatment modalities, several of which have well-established efficacy in treating this condition.
Occipital neuralgia
Trigeminal neuralgia
Atypical trigeminal neuralgia
Trigeminal autonomic cephalgia
Thunderclap headache
Cold-stimulus headache
Orthostatic headache
Trigeminal trophic syndrome