**Depression** can significantly affect a person's ability to drive safely. One of the most common effects of depression is the increased **sensitivity to drowsiness and fatigue**. This means that a depressed person may feel more tired and sleepier than usual, which can lead to a series of problems behind the wheel.

- **Drowsiness** affects reaction time, causing a person to take longer to respond to situations on the road. It can also make decision-making difficult and cause movements to be slower or clumsier. In extreme cases, a person may even fall asleep for a few seconds without realizing it, which is extremely dangerous when driving.

- Additionally, depression can lead to a loss of **concentration**, which increases the risk of traffic accidents. Mood changes, such as receiving sad news, can exacerbate this lack of concentration.

For these reasons, it is crucial that people experiencing depression follow medical recommendations and avoid driving during periods of heightened depression.