When is GP consultation recommended for cluster headache?

Cluster headache causes severe pain on one side of the head, often around the eye. During an attack, the eye may water or look red, the eyelid may droop, or the nostril on that side may block or run. People may feel unable to keep still. Similar symptoms can have other causes, so a GP assessment is needed, particularly when the pattern is new or changing.

Record the start and end of each attack, the side affected, eye or nose symptoms, restlessness, possible triggers, and anything you took. Note whether attacks wake you, occur at a similar time, or come in a repeated spell. Avoid using pain medicines more often than directed, and do not drive if an attack affects your vision or ability to function.

Seek emergency care for a sudden explosive headache, new weakness or numbness, trouble speaking, fainting, confusion, seizure, fever with a stiff neck, persistent vomiting, or a painful red eye with vision loss. Get urgent advice for a new severe headache during pregnancy, after a head injury, or with a serious immune problem.

Ask whether the pattern suggests cluster headache or another cause, whether you need examination or referral, which acute treatment is appropriate, and how to prevent attacks if they recur.