Hemicrania Continua

1. Headache for >3 months fulfilling criteria B-D
2. All of the following characteristics:
   1. unilateral pain without side-shift
   2. daily and continuous, without pain-free periods
   3. moderate intensity, but with exacerbations of severe pain
3. At least one of the following autonomic features occurs during exacerbations and ipsilateral to the side of pain:
   1. conjunctival injection and/or lacrimation
   2. nasal congestion and/or rhinorrhoea
   3. ptosis and/or miosis
4. Complete response to therapeutic doses of indomethacin
5. Not attributed to another disorder