Stress and Social Defeat (Links)

Stress (biological)
From Wikipedia, the free encyclopedia

Stress is an internal response to stimuli or pressures that challenge an organism's ability to adapt or cope, disrupting homeostasis (internal balance). Stress may be mental, physiological, anatomical or physical.[1] Stressful stimuli, also known as stressors, range from chemical agents to medical illnesses to a hectic lifestyle. Psychologically, the level of stress can depend on the emotional or cognitive appraisal that a person makes of a situation and of himself. Stress typically involves activation of the fight-or-flight response. Stress has been shown to cause neurochemical, hormonal and physiological changes.
http://en.wikipedia.org/wiki/Stress_%28medicine%29

Social Defeat
From Wikipedia, the free encyclopedia
Social defeat refers to losing a confrontation among conspecific animals, or any kind of hostile dispute among humans, in either a dyadic or in a group-individual context, generating very significant consequences in terms of control over resources, access to mates and social positions.
http://en.wikipedia.org/wiki/Social_defeat

Personality disorders are defined by the American Psychiatric Association (APA) as "an enduring pattern of inner experience and behavior that deviates markedly from the expectations of the culture of the individual who exhibits it".
http://en.wikipedia.org/wiki/Personality_disorder
http://en.wikipedia.org/wiki/List_of_Personality_disorders