Table 2.
Features | Trigeminal neuralgia | SUNCT/SUNA |
Predominant pain distribution | V2/V3>V1 | V1>V2/V3 |
Severity of pain | Very severe | Very severe |
Duration (seconds) | <1–120 | 1–600 |
Autonomic features | None or sparse | Prominent |
Spontaneous attacks only | None or rare | 40% |
Refractory period | Present | Absent |
Periodicity | Mostly episodic | Mostly chronic |
Preventive treatment of choice | Carbamazepine or oxcarbazepine | Lamotrigine |
SUNA, short-lasting unilateral neuralgiform headache attacks with cranial autonomic symptoms; SUNCT, short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing; V1, first division of the trigeminal nerve; V2, second division of the trigeminal nerve; V3, third division of the trigeminal nerve.