International Headache Society criteria for trigeminal Neuralgia.
Diagnostic criteria
(A) Paroxysmal attacks of pain lasting from a fraction of a second to 2 minutes affecting one or more divisions of trigeminal nerve and fulfilling criteria (B) and (C)
(B) Pain has at least one of the following characteristics:
(i) Intense, sharp, superficial, or stabbing
(ii) Precipitated from trigger areas or by trigger factors
(C) Attacks are stereotyped in the individual patient
(D) There is no clinically evident neurological deficit
