What should you know about cluster headache without pain?

A cluster attack commonly includes pain around one eye or temple, with features such as a watery eye, blocked or runny nostril, eyelid swelling, or marked restlessness on the same side. If you have those automatic symptoms without pain, the pattern may not fit cluster headache. Eye, sinus, nerve, medication, or other headache conditions can produce overlapping signs. A symptom diary can help show whether episodes happen at similar times, affect one side, and include changes in the eye or nose.

Arrange a GP assessment if the episodes are new, recurring, or affecting one eye or side of the face. Record the start and finish of each episode, associated eye or nose changes, possible triggers, medicines, and whether pain is absent or develops later. Do not start oxygen or prescription headache treatment without clinical advice. You can read more about [Headache](/symptoms/headache/) and [Facial Pain and Pressure](/symptoms/facial-pain-and-pressure/) while preparing for the visit.

Seek urgent help for sudden severe head pain, new weakness or numbness, trouble speaking, confusion, fainting, seizure, fever with a stiff neck, or a painful red eye with vision change. New facial drooping or persistent vision loss also needs prompt assessment. These warning signs require attention because they can indicate a problem other than a primary headache disorder.

Ask whether the eye or nose symptoms match cluster headache, whether an eye examination or other tests are needed, and which symptoms should trigger emergency care. Ask how to track episodes and whether any current medicine could be contributing.