Asthma is a long-term disease of the airways of the lung. The airways become sensitive to triggers (allergens and irritants).
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Multiple sclerosis (MS) is a disease of the brain and spinal cord, where the protective covering (myelin) on nerves in the brain and spinal cord is damaged, causing messages traveling along affected nerves to slow or stop.
Osteoarthritis (also called degenerative joint disease) happens when the cartilage in a joint becomes damaged and worn, usually due to age, wear and tear, overuse of the joint, or other problems.
Psoriasis is an inflammatory condition that affects the skin and nails. You may have patches of thick, red skin (plaques) covered with silvery scales. These often appear on the elbows, knees, legs, lower back, and scalp.
Rheumatoid Arthritis (RA) is a chronic autoimmune disease that mainly affects the joints in the elbows, wrists, hands, knees, feet or ankles.