When the symptoms subside, the patient may feel exhausted. Researchers believe that a migraine starts when, for unknown reasons, blood vessels in the brain constrict. In response, the body sends a message to the brain which signals those narrowed blood vessels to dilate. This dilation of blood vessels is assumed to be the cause of the painful symptoms of a migraine. Migraines in Children Headaches are not a problem limited to adults.
Children can also suffer from headaches.
Migraines have even been reported in infants. And, as in adults, the pain of a migraine can be severe and last for several hours. In children, migraines are typically one-sided. Children may also experience nausea, vomiting, and stomach pain. Very young children may exhibit a change in behavior, irritability, unexplained head banging and sleeping difficulties.