Abrupt onset and termination of cutaneous allodynia (central sensitization) during attacks of SUNCT.

The presence of central sensitization and cutaneous allodynia has not been readily studied in other primary headache syndromes outside of migraine. If central sensitization does occur, is the temporal profile any different in the short-lasting more aggressive syndromes such as SUNCT than in migraine? A patient with SUNCT was examined during and in between attacks looking for the presence and duration of cutaneous allodynia.