Signs your headache could be sinister

Headaches can take hold for many reasons, but certain symptoms are red flags and should not be ignored

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They are a common nuisance, but some headaches can be a sign of something more serious and even life-threatening. And it is important to know when to get help. With March being Brain Tumour Awareness Month, we spoke to experts about when a headache should raise concern, and the steps to take if you're feeling worried.

Is a headache a common side effect of a brain tumour?

Headaches are a common symptom of brain tumours, occurring in about 50-60% of patients, says Dr Steven Allder, consultant neurologist at Re:Cognition Health.

"The mechanisms by which brain tumours cause headaches include increased intracranial pressure, direct irritation and changes in blood flow," says Dr Allder. "Tumours can occupy space in the skull, causing swelling or blocking the flow of cerebrospinal fluid, which leads to increased pressure on the brain.

"Additionally, tumours may press on or stretch sensitive tissues like blood vessels or nerves, triggering pain. Tumours can also disrupt normal blood circulation within the brain, contributing to headaches."