Brain tumour headaches: patterns and warning signs

A tumour may cause pain by increasing pressure inside the skull, obstructing normal fluid flow, producing swelling, or affecting pain-sensitive tissues. Many non-cancerous conditions also cause headaches, so clinicians assess the whole pattern rather than one feature.

Useful details include when the headache began, whether it is changing, what triggers or relieves it, and whether it comes with vomiting, seizures, weakness, visual change, speech difficulty, confusion or altered behaviour. A neurological examination checks functions such as strength, balance, sensation, vision and language.

When the history or examination raises concern, brain imaging can look for a structural cause. MRI provides detailed views of brain tissue, while other imaging may be chosen when MRI is unsuitable or urgent access is needed. Imaging decisions depend on symptoms and clinical findings.

Write down the headache's timing, location, severity, duration, associated symptoms and medicines taken. Note whether it wakes you, follows coughing or straining, or differs from your established headache pattern. Bring an updated medicine list and mention cancer history, immune suppression, recent injury and blood-thinning treatment.

Use pain medicine only as directed, because frequent use of some headache medicines can itself contribute to recurring pain. If a brain tumour is already diagnosed, report a clear change in headaches to the treating team rather than waiting for routine follow-up.

Call emergency services for a sudden severe headache, a first seizure, loss of consciousness, marked confusion, new one-sided weakness, facial droop, new speech difficulty, or sudden loss of vision. A headache after a significant head injury also needs urgent assessment when accompanied by vomiting, drowsiness or neurological change.

Seek prompt medical advice for a new headache that steadily worsens, repeatedly wakes you, occurs with unexplained vomiting, or appears alongside new balance, personality, memory or visual changes. Urgency comes from these red-flag features, not from assumptions about how often a cause occurs.

Ask which findings could explain the pain, whether a neurological examination or imaging is appropriate, and which changes should trigger urgent review. If a tumour is known, ask whether swelling, treatment effects, medicine changes or tumour activity could contribute and how the care team plans to distinguish them.