Corticosteroids are used to treat a wide variety of inflammatory, allergic, and autoimmune conditions related to the skin, respiratory system, endocrine system, digestive system, eye, immune system, and musculoskeletal system. Specific conditions that can require corticosteroid treatment are asthma, chronic obstructive pulmonary disease, skin rashes, food and drug allergies, colitis, Crohn’s disease, anemia, tendinitis, arthritis, and migraine headaches.