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An autoimmune disease develops when the immune system, which defends the body against disease, attacks healthy body cells. Depending on the type, an autoimmune disease can affect one or many different types of body tissue. It can also cause abnorm...
Behcet's disease is a rare disorder that causes blood vessels to become inflamed. Also known as Behcet's syndrome, this condition has several symptoms that may not otherwise seem related.
Common colds and influenza are contagious infections that affect the respiratory system. Both are airborne illnesses, spread through coughing and sneezing. Shared symptoms include headache, cough, sore throat, and more.