Headaches can have many causes, ranging from temporary lifestyle factors to underlying medical conditions. Most headaches are not dangerous, but some require prompt medical attention.
Common causes include:
- Stress or anxiety – Muscle tension and emotional stress are among the most frequent triggers.
- Dehydration – Not drinking enough fluids can cause headaches.
- Lack of sleep or poor-quality sleep.
- Eye strain – Spending long periods looking at screens or needing an updated eyeglass prescription.
- Hunger or low blood sugar – Skipping meals can trigger headaches.
- Caffeine – Too much caffeine or caffeine withdrawal.
- Alcohol – Especially after heavy drinking.
- Illness – Colds, the flu, sinus infections, or fever.
- Certain medications – Some medicines can cause headaches as a side effect, and frequent use of pain relievers can lead to “medication overuse headaches.”
Some specific headache types include:
- Tension headaches – Usually feel like a tight band around the head.
- Migraines – Often cause throbbing pain, nausea, and sensitivity to light or sound.
- Cluster headaches – Severe pain around one eye, occurring in clusters over days or weeks.
When to seek medical care immediately
Get urgent medical attention if a headache:
- Starts suddenly and is extremely severe (“the worst headache of your life”)
- Follows a head injury
- Is accompanied by fever, stiff neck, confusion, seizures, weakness, numbness, difficulty speaking, or vision changes
- Gets progressively worse or is different from your usual headaches
Managing common headaches
For many mild headaches, it may help to:
- Drink water if you may be dehydrated.
- Eat a balanced meal if you’ve skipped eating.
- Rest in a quiet, dark room.
- Get enough sleep.
- Use over-the-counter pain relievers as directed, but avoid taking them too frequently, as this can make headaches more common.
If you have frequent headaches (more than a few times a month), severe headaches, or headaches that interfere with your daily life, it’s a good idea to see a healthcare provider for evaluation.
Can you tell me:
- Where is the headache located (front, back, one side, around the eyes)?
- When did it start?
- Is it dull, throbbing, sharp, or pressure-like?
- Do you have any other symptoms, such as nausea, fever, vision changes, or sensitivity to light?
