Allergies occur when the body's immune system overreacts to outdoor stimulants such as mold spores and pollen. Learn about symptoms and treatment.
Asthma—a chronic inflammation of the airways that causes trouble breathing—affects 5 to 10 percent of children in the United States.
Immunotherapy is a treatment that taps into the body's immune system to fight cancer. Learn more about this treatment.
Alpha-gal syndrome (AGS) is an allergy in which people have an allergic reaction to a carbohydrate called alpha-gal that is found in all non-primate mammals. When people with AGS consume mammalian meat or products containing alpha-gal, they may have an allergic reaction, which can be severe.
Immune therapy is a cancer treatment approach that uses the body’s own immune system to attack cancer cells. Learn more about this treatment.
A penicillin allergy is a mild or severe reaction to a specific group of antibiotics. Learn about symptoms and treatment.
Asthma is a chronic inflammatory disease of the airways. Learn about symptoms and treatment.
Eczema is the diagnosis for chronic dry skin that brings extremely itchy, pink skin or red rashes. It's common in kids, but adults get eczema too.
HIV is a retrovirus that impairs the immune system and causes AIDS. Learn about symptoms and treatment.
Diseases that are transmitted to humans through the bite of ticks infected with several types of bacteria and viruses.