Suffering, or pain in a broad sense, is an individual's basic affective experience of unpleasantness and aversion associated with harm or threat of harm. Suffering may be qualified as physical or mental. It may come in all degrees of intensity, from mild to intolerable. Factors of duration and frequency of occurrence usually compound that of intensity. In addition to such factors, people's attitudes toward suffering may take into account how much it is, in their opinion, avoidable or unavoidable, useful or useless, deserved or undeserved.
Suffering occurs commonly in the lives of sentient beings, in diverse manners, and often dramatically. As a result, many fields of human activity are concerned, from their own points of view, with some aspects of suffering. These aspects may include the nature of suffering, its processes, its origin and causes, its meaning and significance, its related personal, social, and cultural behaviors, its remedies, management, and uses.