July, 2008, psychology
Stress
The concept of stress goes back to the 1930’s, when a
young 20-years-old Austrian second year student of the school of medicine at
the University of Prague, Hans Selye, the son of Austrian surgeon Hugo Selye,
noted that all patients who studied, regardless of the disease itself, showed
common symptoms. These generally included: fatigue, loss of appetite, weight
loss, etc. this drew much attention to Selye, who called stress the “syndrome
of being ill.”
Selye felt then that several unknown diseases such as
cardiac illnesses, hypertension and mental or emotional disorders are simply
the result of physiological changes resulting from a prolonged stress in the
bodies of these students, and mentioned that these genetic alterations may be
predetermined or constitutionally. However, to continue their investigations,
others elaborated upon his ideas, which concluded that not only harmful
physical agents acting directly on the body are producers of animal stress, but
are also in the cases of men. They found that demands of social and threats
individual environments that require adaptability cause stress disorder.
In the description of the disease, he identified at
least the following three stages in the production mode of stress:
1. Alarm reaction:
the body, threatened by the stress inducing
circumstances, were altered physiologically by activating a series of glands,
especially in the hypothalamus and the pituitary gland, which is located at the
bottom of the brain, and the adrenal glands, located on the kidneys in the area
in back of the abdominal cavity,
the brain, to detect the threat or risk, stimulates
the hypothalamus, which produces “liberating factors” that are specific
substances that act as messengers for corporal and specific areas. One such
substance is a hormone called ACTH (Adrenal cortico Trophic Hormone) which
serves as a physiological messenger that travels the bloodstream until it
reaches the crust of the adrenal gland, where under the influence of such a
message produces cortisone and other hormones called corticosteroids.
To be
continue….