Professor Anne MacGregor gives tips for parents on how to recognise and treat headaches in children.
Most children and teenagers get at least one headache a year. They're often different from the headaches that adults get, so parents and healthcare professionals can fail to notice the problem.
Headaches, including migraines, tend to be much shorter in children, according to Professor MacGregor of the Centre for Neuroscience and Trauma at Barts and the London School of Medicine and Dentistry.
They start suddenly in children, with the child quickly becoming pale and listless, and often feeling sick and vomiting.
Children also generally recover very quickly. "The headache can be over half an hour later, with the child feeling well and playing outside as if nothing's happened," Professor MacGregor says.
Children's headaches can also affect their stomach, so a tummy ache is a common complaint, she says.