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Why do children get headaches?

Headaches in children are common and usually not serious.

Causes include migraines, stress and tension headaches, trauma, sinus disease, and eye problems.

Brain tumours in children as a cause for headaches are extremely rare, and are usually associated with additional neurologic symptoms such as dizziness, weakness of the arms or legs, and lack of coordination.

It is helpful to keep a headache diary so that possible triggers (certain foods, sleep disturbances, or environments) can be discovered.

If no obvious medical cause for the headaches is found by the pediatrician, a referral to an ophthalmologist is done to perform a complete eye exam. This includes examination of the pupils, any refractive error (need for glasses), eye alignment, and binocularity (the ability to use both eyes together).

During this examination, the pupils should be dilated, so that the optic nerves can be properly examined and the refractive error can be most accurately assessed.

How do eye problems cause headaches in children?

Hyperopia (farsightedness) requires extra effort to focus clearly while reading.  This can sometimes lead to fatigue and headache.  Glasses can reduce the effort required to see clearly at near and improve the headache, if significant hyperopia exists.  Mild hyperopia is normal in children, however, and generally does not cause headaches or other symptoms.

When we read or perform other nearsighted activities, our eyes pull in toward each other, this is called convergence. The decreased ability to pull the eyes toward each other when viewing objects that are closer to the eyes (convergence), particularly while reading, may cause headaches.  This is called convergence insufficiency, and symptoms include the doubling of images or words, blurred vision, fatigue, and headaches which worsen with prolonged reading.

At home eye exercises, sometimes with the help of computer software, can help treat convergence insufficiency.  Glasses are sometimes prescribed.

Acute infections and inflammatory diseases of the eyes can cause headaches.  These problems are often accompanied by redness of the eye and/or eyelid as well as light sensitivity (photophobia).  Acute glaucoma can cause headaches, but rarely affects children.

Pseudotumor cerebri is a condition caused by increased intracranial pressure (too much fluid around the brain).  This causes headache and swelling of the optic nerves, but does not typically cause redness of the eyes.

A complete exam by an ophthalmologist can help rule out these conditions.

If no ocular causes of headache are identified, the child may be referred to his/her pediatrician and/or to a neurologist to look for other possible causes of the headaches.

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