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Disease

Last updated: October 31, 2017

What Does Disease Mean?

A disease is a change from the normal state of a being to one that is harmful to the individual. A disease will be classified as a specific medical condition and will have signs and symptoms that are associated with it. Often different diseases have similar symptoms, so it is important for a physician to do an in depth analysis in order to arrive at the correct diagnosis. Diseases are often the result of external bodies, known as pathogens, invading the body.

Safeopedia Explains Disease

The study of disease is known as pathology. Pathologists seek to find the cause (etiology) of the disease. They then seek to understand the mechanics of its development, a process known as pathogenesis. The disease will often cause structural changes, which are known as morphological changes. If a person dies as a result of a disease, it is considered to be a death by natural causes. The four main types of disease are:

  • Infectious
  • Genetic
  • Communicable
  • Non-Communicable
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