Consumer health basics
Cyclic vomiting syndrome often starts in childhood and is marked by spells of vomiting several times an hour over a period of hours or days.
It's possible to be allergic to some types of shellfish without reacting to other types. Learn more about this common food allergy.
Learn more about symptoms, treatment, self-care tips and prevention of bee stings, which in some people cause severe allergic reaction.
Allergy symptoms can range from mild to severe, even life-threatening. Most allergies can't be cured, but treatments can help.
Find out more about headaches in children, which may or may not be serious. They can often be managed with medications and healthy habits.