General adaptation syndrome (GAS) is the process that describes how the body responds to stress. Hans Selye was the first doctor who identified this theory in 1946.As per his report, there are three stages of the syndrome. During each one, the body goes through various psychological changes.
1. Alarm reaction stage
This is the first phase, during which the body experiences the initial symptoms of distress. The brain releases glucocorticoids and adrenaline hormones, setting up the “flight-or-fight” response.
The body’s signals during this stage include elevated blood pressure, increased heart rate, dilated pupils, heightened senses, and flushed skin.
2. Resistance stage
In this stage, the body deals with the changes that occur in the reaction stage and tries to repair itself. Although it is recovering, it remains on high alert. If the person overcomes the stressful event, the body will continue rebuilding and eventually return to a pre-stressed state.
However, the reaction stage can become permanent if a person remains tense. The body will learn to live on high alert, constantly producing stress hormones and increasing blood pressure. This triggers the exhaustion stage.
The most common signs of the resistance stage are irritability, frustration, and poor concentration.
3. Exhaustion stage
If the pressure becomes long-term, it can send the body into exhaustion.
Chronic stress drains the physical, emotional, and mental capacity to a point where the body no longer has the strength to fight it. The physical toll of this phase weakens the immune system, increasing the risk of stress-induced conditions.
Signs of the exhaustion stage include anxiety, depression, fatigue, burnout, and lower pressure tolerance.
While GAS is not a condition that needs to be treated, people must learn how to recognize it. Chronic stress can increase the risk for cardiovascular diseases and other medical conditions.