**Depression** is an illness that can significantly affect a person's ability to drive safely. When a person is depressed, they may experience a **loss of concentration** and a **decrease in the ability to process information from the environment**. This means that the driver may take longer to detect important events on the road, increasing the risk of accidents.

It is crucial that people with depression follow the treatment prescribed by a doctor and avoid driving during periods when their depressive state is more intense. Additionally, they should avoid the consumption of alcohol or drugs, as these can worsen their condition and further affect their ability to drive.

In summary, depression can lead to a **loss of information from the environment** and a **slower reaction to important situations**, making it dangerous to drive under its influence.