Consumer health basics
Learn more about this congenital heart defect that makes it difficult for the heart to pump the right amount of blood to the lungs and the body.
It's possible to be allergic to some types of shellfish without reacting to other types. Learn more about this common food allergy.
Male infertility often plays a role when couples have trouble conceiving. Find out what causes male infertility and available options for treatment.
Having a low sperm count can make conceiving a child difficult, but not necessarily impossible. Learn about possible causes and treatment.
Find out more about headaches in children, which may or may not be serious. They can often be managed with medications and healthy habits.
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.
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.