disease /dis·ease/ (dĭ-zēz´) any deviation from or interruption of the normal structure or function of any body part, organ, or system that is manifested by a characteristic set of symptoms and signs and whose etiology, pathology, and prognosis may be known or unknown.
Alzheimer's disease progressive degenerative disease of the brain, of unknown cause; characterized by diffuse atrophy throughout the cerebral cortex with distinctive histopathological changes.
1. A pathological condition of a part, organ, or system of an organism resulting from various causes, such as infection, genetic defect, or environmental stress, and characterized by an identifiable group of signs or symptoms.
2. A condition or tendency, as of society, regarded as abnormal and harmful.
3. Obsolete Lack of ease; trouble.
1. (Medicine / Pathology) any impairment of normal physiological function affecting all or part of an organism, esp a specific pathological change caused by infection, stress, etc., producing characteristic symptoms; illness or sickness in general
2. (Life Sciences & Allied Applications / Plant Pathology) a corresponding condition in plants
3. any situation or condition likened to this the disease of materialism
Disease is a term for any condition that impairs the normal functioning of an organism or body. Although plants and animals also contract diseases, by far the most significant disease-related areas of interest are those conditions that afflict human beings. They can be divided into three categories: intrinsic, or coming from within the body; extrinsic, or emerging from outside it; and of unknown origin. Until the twentieth century brought changes in the living standards and health care of industrialized societies, extrinsic diseases were the greater threat; today, however, diseases of intrinsic origin are much more familiar. Among them are stress-related diseases, autoimmune disorders, cancers, hereditary diseases, glandular conditions, and conditions resulting from malnutrition. There are also illnesses, such as Alzheimer's disease, whose causes remain essentially unknown.
I got a comment yesterday that Alzheimer's is not a disease. They said they want to challenge that it is not a disease. Any comments??
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