chronic diseases of long duration and slow progression, or they may result in more rapid death such as some types of sudden stroke.

a damaging immune response by the body to a substance.

PAINFUL INFLAMMATION AND STIFFNESS OF THE JOINTS.

a metabolic disease in which the body’s inability to produce any or enough insulin causes elevated levels of glucose in the blood.

the thin layer of tissue forming the natural outer covering of the body of a person or animal.

noun 1. a progressive disease of the nervous system marked by tremor, muscular rigidity, and slow, imprecise movement, chiefly affecting middle-aged and elderly people. It is associated with degeneration of the basal ganglia of the brain and a deficiency of the neurotransmitter dopamine.