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, itself a group of more than 100 different diseases, is 1 category of rheumatic diseases. Read on to learn more about these conditions, and the types of healthcare providers who treat them.

Angina pectoris--or simply angina--is chest pain or discomfort that keeps coming back. It happens when some part of your heart does not get enough blood and oxygen. Read on for details.

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.