Human Diseases
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Chronic Diseases
Diseases which have one or more of the following characteristics: they are permanent, leave residual disability, are caused by nonreversible pathological alteration, require special training of the patient for rehabilitation, or may be expected to require a long period of supervision, observation, or care. [NALT]
Drug and Alcohol Abuse
The use of illegal substances or the inappropriate use of legal substances, including the repeated use of substances to produce pleasure, to alleviate stress, and/or to alter or avoid reality.