Ailment
Synonyms
Disease; Illness
Definition
Disease represents impairment of the normal state or
functioning of the body as a whole or of any of its
parts. Some diseases are acute, producing symptoms
that last short period of time, for example, flu, pneumonia.
There are also chronic disorders, such as, arthritis,
hypertension, etc. that last for a long time. Diseases
are usually classified according to cause. External
factors that produce disease are infectious agents,
including bacteria, viruses, fungi, but also disease may
occur as a consequence of different chemical and physical
agents such as drugs, poisons, radiation. Some diseases
are inherited and some of them acquired due to
environmental, infectious and various lifestyle factors.
Also, many diseases are attributed to emotional disturbances.
Most diseases occur as a result of an interaction
between the body and the environment. In ancient
times disease was ascribed to supernatural, spiritual,
and humoral factors.

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