Clinical features of the trigeminal autonomic cephalalgias (TACs)
| Cluster headache | Paroxysmal hemicrania | SUNCT syndrome | |
|---|---|---|---|
| *Nausea, photophobia (often ipsilateral to the pain) or phonophobia. | |||
| †May have photophobia ipsilateral to the pain. | |||
| SUNCT, Short lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing. | |||
| Sex (F:M) | 1:4 | 2:1 | 1:2 |
| Pain | |||
| Type | Stabbing, boring | Throbbing, boring, stabbing | Burning, stabbing, sharp |
| Severity | Severe to excruciating | Excruciating | Moderate to severe |
| Site | Orbit, temple, face | Orbit, temple | Periorbital |
| Attack frequency | 1/alternate day–8 daily | 1–40/day | 1/day–30/hour |
| Duration of attack | 15–180 minutes | 2–30 minutes | 5–240 seconds |
| Autonomic features | Yes | Yes | Yes (prominent conjunctival injection and lacrimation) |
| Migrainous features* | Yes | Yes | No† |
| Alcohol trigger | Yes | Occasional | No |
| Indometacin effect | – | ++ | – |