Table 1.

Diagnostic criteria for paroxysmal hemicrania (ICHD-II)

A. At least 20 attacks fulfilling criteria B–D

B. Attacks of severe unilateral supra-/orbital temporal pain lasting 2–30 min

C. Headache is accompanied by at leats 1 of the following:

1. Ipsilateral conjunctival injection and/or lachrymation

2. Ipsilateral nasal congestion and/or rhinorrhea

3. Ipsilateral eyelid oedema

4. Ipsilateral forehead and facial sweating

5. Ipsilateral miosis/ptosis

D. Attacks with a frequency of >5/day for more than half the time

E. Attacks completely prevented by therapeutic doses of indomethacin (mg kg−1 day−1)

F. Not attributed to another disorder