Do I need a brain scan?
Almost certainly not. Primary headaches — tension-type and migraine — are diagnosed on history, and a scan is normal in both, so it cannot confirm anything. Scanning is reserved for specific warning features. A normal scan also does not make headaches less real, which is a common and unhelpful assumption.
Why do I wake up with a headache every day?
Three possibilities are worth checking. Medication overuse is the commonest — count your painkiller days honestly. Sleep apnoea causes morning headaches, particularly with snoring and daytime sleepiness. And rarely, headache worse on waking and on lying flat can indicate raised pressure inside the head, which needs assessing.
Can painkillers really cause headaches?
Yes, and it is one of the most under-recognised problems in headache medicine. Regular use — more than 10 days a month — changes how the brain processes pain and produces a persistent daily headache. The only treatment is stopping, which is hard for two to four weeks and then markedly better.
Is it my eyes?
Less often than people assume, but it is worth excluding, particularly if headaches follow close work or reading and sit around the eyes and forehead. An eye test is quick, often free, and rules it in or out.
Could it be my blood pressure?
Usually not. High blood pressure does not generally cause headaches unless it is very high indeed, and the belief that it does leads people to check their blood pressure when they have a headache — finding it raised because they are in pain and anxious. It is worth measuring, but it rarely turns out to be the explanation.
How do I know if it is a cluster headache?
Three features together: excruciating one-sided pain around the eye, lasting under three hours, with a watering eye or blocked nostril on that side — and, crucially, being unable to keep still. Migraine sufferers lie down; cluster sufferers pace. If that is you, say so, because the treatment is completely different and highly effective.
What about carbon monoxide?
Worth taking seriously if headaches occur at home and improve when you are away, particularly if anyone else in the house — including pets — is affected. Get gas appliances serviced and fit an alarm. It is rare, but it is one of the few headache causes that is both entirely preventable and fatal.
Is caffeine good or bad?
Both. It can relieve a headache in the short term and cause one on withdrawal. What matters is consistency — a steady daily amount is fine, while cutting back sharply on a Saturday produces exactly the weekend headache people blame on stress.