Consumer health basics
It's possible to be allergic to some types of shellfish without reacting to other types. Learn more about this common food allergy.
Find out about painful migraine headaches that can last hours to days. Other symptoms may include nausea, vomiting, and sensitivity to light and sound.
Learn more about the causes and treatment of this heart rhythm condition that can cause fast, chaotic heartbeats.
Some herbal supplements can have dangerous interactions with heart medications.
Find out more about headaches in children, which may or may not be serious. They can often be managed with medications and healthy habits.
Depo-Provera, a contraceptive injection that's given every three months, contains the hormone progestin to help protect from unintended pregnancy.
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.