When is a headache a sign of something abnormal?

Headaches can lay you low, and for children they can be debilitating. But how can you tell when a headache is a result of not drinking enough water, and when is it something that requires medical attention? Sarah Hunstead, CEO of CPR Kids, talks about the signs and symptoms you should be aware of in your child when it comes to headaches.See omnystudio.com/listener for privacy information.