Patients presenting with a headache originating at the posterior skull base should be evaluated for ON. This condition typically presents as a paroxysmal, lancinating or stabbing pain lasting from seconds to minutes, and therefore a continuous, aching pain likely indicates a different diagnosis. Bilateral symptoms are present in one-third of cases.
Occipital neuralgia
Trigeminal neuralgia
Atypical trigeminal neuralgia
Trigeminal autonomic cephalgia
Thunderclap headache
Cold-stimulus headache
Orthostatic headache
Trigeminal trophic syndrome