Three simple questions have a sensitivity of 53.8% and a specificity of 88.9% for cluster headache.
Stepwise web-based questionnaires for diagnosing cluster headache: LUCA and QATCH
Leopoldine A Wilbrink, Claudia M Weller, Carlo Cheung, Theo Stijnen, Joost Haan, Michel D Ferrari and Gisela M Terwindt
Cephalalgia 2013 in press
http://www.ncbi.nlm.nih.gov/pubmed/23624341
Uses following format:
1) Untreated attack duration 15-180 minutes – 2.5 points
2) Attack free periods 4 months – 3 years – 1.5 points
3) male gender – 1 point; female gender – 0 points
score >/= 1.5 is positive
Comment -would have thought lack of nausea would be big point but does make it succinctly clear what is most important.