A single cluster headache usually lasts how long?
Which diagnostic tests can be used to confirm that someone has cluster headaches?
In which gender do cluster headaches occur more frequently?
Cluster headaches often have ipsilateral symptoms. Where do these ipsilateral symptoms occur?
Which is most likely to be characteristic of what someone wants and needs during a cluster headache?
Which of the following is NOT commonly used to treat a cluster headache when it occurs?