<unk> is the condition that results when person-environment transactions lead the individual to perceive a discrepancy, whether real or not, between the demands of a situation and the resources of the persons biological, psychological or social systems.
In medical terms,<unk> is the disruption of homeostasis through physical or psychological stimuli.<unk> ul stimuli can be mental, physiological, anatomical or physical reactions. The term<unk> ' in this context was coined by Austro-Canadian endocrinologist Hans Selye, who defined the General Adaptation Syndrome or GAS paradigm in 1936.
Stress 
Opioid withdrawal
Homeostasis
Alcohol withdrawal
Opiate withdrawal
Sleep debt
Psychopathology
Doping 