Consumer health basics
Allergy symptoms can range from mild to severe, even life-threatening. Most allergies can't be cured, but treatments can help.
An allergic reaction to meat-based meals had researchers stumped — until they connected the condition to bites from certain ticks.
Learn about the symptoms, causes and treatment for hardening of the arteries.
Learn more about symptoms, treatment, self-care tips and prevention of bee stings, which in some people cause severe allergic reaction.
Most often the result of a severe heart attack, this rare condition can be deadly if not treated immediately.
If you have a headache most days, you might have one of the most disabling headache conditions, chronic daily headaches. Aggressive treatment and long-term management might help.
Learn more about the symptoms and treatment of this allergic skin reaction caused by cold that most often affects young adults.
Learn about this serious heart condition in which the major blood vessels that supply your heart with blood become damaged or diseased.
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.
Egg allergy can cause a serious reaction in children and adults. Here's how to recognize egg allergy symptoms, and what to do if a severe reaction occurs.