Fig. 2

The percentage of male migraine patients, male cluster headache patients and male non-headache controls reporting to score below average on each of the individual items assessing sexual symptoms, and the percentage of participants suffering from diminishment of at least one of these four sexual symptoms. Abbreviations: NS = not significant; * = p-value < 0.05; ** = p-value < 0.01; *** = p-value < 0.001