A headache on waking usually points at your night: sleep apnoea, tension held in your neck and jaw, alcohol, or short and broken sleep.
The NHS lists waking with a headache as a classic sleep apnoea symptom - ask whether anyone has heard loud snoring or gasping, because that combination needs a GP. A sudden, severe headache is always an emergency. Pymander is a free AI doctor, 24/7 by text, and can help you weigh the pattern.
What to do
Common questions
Why do I wake up with a headache?
A headache that greets you on waking usually points at your sleep, not your morning. The cause worth ruling out first is sleep apnoea, where breathing stops and starts overnight. The NHS lists waking with a headache as a classic daytime symptom, alongside loud snoring, gasping or choking noises, waking a lot, and feeling very tired during the day. If a partner has noticed the snoring or gasping, that pattern deserves a GP visit - untreated sleep apnoea can lead to more serious problems, and it is treatable. Tension headache is the other common explanation: MedlinePlus describes it as tight muscles in the shoulders, neck, scalp and jaw, often tied to stress, and a night spent clenching your jaw or sleeping in an awkward position can deliver it by morning. Alcohol in the evening and too little or irregular sleep also play their part. One red flag overrides everything: a sudden, severe headache - or one with weakness, confusion, or trouble speaking - needs emergency care immediately, not a wait-and-see morning. Pymander is a free AI doctor, 24/7 by text, that can help you sort the pattern.