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.
Learn how medications and bone marrow transplants are used to control complications caused by these syndromes that affect the bone marrow.
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.
Learn more about the causes and treatment of this heart rhythm condition that can cause fast, chaotic heartbeats.
Learn more about the symptoms and treatment of this allergic skin reaction caused by cold that most often affects young adults.
An allergic reaction to meat-based meals had researchers stumped — until they connected the condition to bites from certain ticks.
Peanut allergy can be serious. Find out what you need to know to prevent a life-threatening reaction, and get the latest on treatment approaches.
Allergy symptoms can range from mild to severe, even life-threatening. Most allergies can't be cured, but treatments can help.
A blood clot blocks and stops blood flow to an artery in the lung. Often the clot starts in a leg and travels to the lung.