Ankylosing spondylitis (AS) is a type of arthritis that affects the spine. Read on to learn details about this condition, including symptoms, diagnosis, and treatment.

Arthritis is a category of rheumatic diseases. Read on to learn more about these conditions and the types of health care providers who treat them.

Angina pectoris is chest pain or a feeling of chest discomfort that occurs when a part of your heart doesn't get enough blood and oxygen. Learn more about angina, including causes, risks, symptoms, diagnosis, treatment, and prevention.

Detailed information on wheat allergy, a type of food allergy. Includes how to read a label for a wheat-free diet and tips when dining out.

Detailed information on hives, including what food and medicines commonly cause them.

An aneurysm is a bulging, weak area in the wall of a blood vessel. An aneurysm may occur in any blood vessel, but most often develops in an artery rather than a vein.

Detailed information on how to eat safely when you have a tree nut food allergy. Includes helpful tips on reading food labels and eating safely when you are not at home.

Most allergic reactions are a result of an immune system that responds to a "false alarm."

Detailed information on symptomatic conditions of allergy, including asthma, atopic dermatitis, contact dermatitis, rhinitis, and urticaria

When you have a soy allergy, you must stay away from all foods or products containing soy. Read on for helpful information and tips about following a soy-free diet, from reading food labels to eating out.