Neuromyelitis Optica (NMO) can have atypical presentations like hiccups, vomiting, etc. which is classically described as the area postrema syndrome. [ncbi.nlm.nih.gov]

HC is probably much more common than originally thought and often misdiagnosed. 2 HC can also be accompanied by idiopathic stabbing headache, often called “jabs and jolts,” and is frequently associated with an ipsilateral foreign body sensation in the [neurology.org]

Thus, CH attacks frequently wake patients out of sleep. 3 Finally, the clinician should not be distracted by migrainous symptoms—photophobia can occur in 91% and phonophobia in 89% of CH attacks, and nausea occurs frequently in cluster as well. 4 All [neurology.org]

TACs are a rare group of headache disorders characterized by severe unilateral headache in the V1 distribution of the trigeminal nerve and autonomic symptoms. This presentation in NMO is hitherto unreported in literature. [ncbi.nlm.nih.gov]

The TACs are a group of primary headache disorders characterized by short-lasting episodes of severe unilateral headaches that are associated with ipsilateral cranial autonomic symptoms. [journals.lww.com]