What is exogenous?

What Does exogenous Mean

The adjective exogenous refers to that whose origin is external ( exterior ). The term is often used in the field of biology and in the field of geology , for example.

On the biological level, the organ, agent, substance, effect or stimulus that is born outside the organism is classified as exogenous . A health disorder , in this framework, can have exogenous or endogenous causes.
The environmental factors that affect a developing fetus, to cite one case, are exogenous. If the mother, at work , inhales toxic substances that are in the air, her baby may suffer various problems. These problems have an exogenous origin.

An exogenous infection , on the other hand, occurs when the agent reaches the host from an external source. This occurs with sexually transmitted diseases. In endogenous infections , the agent is already colonizing the host and the infectious process is triggered by a modification of the agent-host relationship.
For psychology , exogenous depression is that which arises from external events : being unemployed, suffering the death of a relative, etc. The endogenous depression , however, breaks into the brain without an external factor, caused by physiological disorders or genetic causes.
Although depression can originate from different causes, the symptoms of both classes are quite similar in most cases. This is one of the first obstacles when it comes to diagnosing it and, therefore, indicating an appropriate treatment . However, some of the more specific symptoms can help psychologists determine their origin even if the patient has not evidenced it.
One of them is pessimism about the future . Why is this symptom not as common in endogenous depression as in exogenous depression? Because in the first type the person can suffer from the disease from an early age and get to "get used to" the ups and downs it entails, while in the second it is common for them to experience great disappointment due to an event that surprises them and leads to lose hope in general.
This pessimism also tends to overshadow the positive things that take place in your life. Another of the most common symptoms is irritability , which is usually accompanied by anxiety . If we think that an external factor changes the patient's life for the worse and without prior warning, it is understandable that he becomes distrustful, that he feels that bad luck follows him and that he gets angry at anything that does not turn out as expected, thinking that misfortune It is just around the corner.

As a logical consequence of these alterations in the personality appears a loss of interest in the things and people that surround the individual, even in their favorite activities . The mere possibility of another negative milestone breaking into his life leads him to withdraw into himself to protect himself.
The alteration of sleep is another symptom of exogenous depression. This can be seen in both extremes: sleeping too much or having great difficulty falling asleep. It is also common for the patient to cut ties with family and friends , as part of the loss of interest in life itself. To treat this disease you can resort to therapy and drugs.
According to geology , an exogenous phenomenon (or an exogenous force ) develops on the surface of the planet. They have no place, therefore, inside the Earth.
The exogenous energy , finally, does not come from inside the body , unlike the endogenous energy (generated by the feed).

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