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Headaches

Dr Lynn Thomas, OStJ, BSc, MB.BS, MA, FRCPClinically reviewed: 28/04/2025

Most headaches aren’t serious. However, some headaches can be a sign of more serious conditions. Find out what to look for and how to perform first aid.

What is a headache?

Most headaches aren’t serious and usually settle without treatment. Some people can get them for no specific reason, but sometimes they occur following a specific cause. Some headaches can be a sign of more serious conditions, such as meningitis, stroke, or following a head injury.

Possible causes include:

  • an illness such as flu

  • dehydration

  • stress or tiredness

  • exposure to extremely hot or cold temperatures

  • excess alcohol or other drug use.

What to do

  1. 1

    If someone has a headache, help them to sit or lie down somewhere quiet and give them a cold compress to hold against their head.

  2. 2

    If the casualty is an adult, you can suggest they take the recommended dose of painkillers, like paracetamol. If the casualty is a child, you can give them the recommended dose of paracetamol syrup.

    • Do not give aspirin to anyone under the age of 16 or anyone who is known to be allergic.

  3. 3

    Seek medical advice if the casualty:

    • does not improve

    • develops a severe and incapacitating pain

    • has pain accompanied by fever or vomiting

    • has blurred or double vision

    • has pain accompanied by loss of strength or sensation, or by impaired level of response, as this could indicate early signs of a stroke

    • has pain following a head injury that is not settling or is getting worse

    • has pain accompanied by a stiff neck and sensitivity to light; this could indicate that the casualty has meningitis.

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