Red wine and headache: what to know

Headache can follow alcohol because alcohol affects blood vessels, fluid balance and sleep. Some people notice symptoms soon after drinking, while others develop them later. Red wine may be a personal migraine trigger, but a headache after wine does not identify one specific diagnosis.

Consider the wider context: heat, missed meals, poor sleep, anxiety, congestion or an infection can also cause headache. Dehydration and heat exhaustion are especially relevant after time outdoors or in a hot setting. Fever or respiratory symptoms may point towards an illness rather than the drink itself.

Record the wine, amount, timing, food, sleep, heat exposure and symptoms. If a repeatable pattern appears, avoid the suspected trigger and choose non-alcoholic alternatives. Drink water, eat regular meals and rest in a cool, quiet place. Follow label directions for any pain medicine and avoid combining medicines with further alcohol.

Get emergency help for a sudden severe headache, new weakness or numbness, trouble speaking, confusion, fainting, a stiff neck, repeated vomiting, vision loss or a high fever. Seek medical advice for a new or changing pattern, headaches after a head injury, or episodes that keep returning despite avoiding wine.

Ask whether the pattern sounds like migraine, whether your medicines or health conditions alter your risk, and which warning signs matter for you. Bring your symptom diary, including onset, duration, location and associated nausea or light sensitivity.