F32: Depressive episode

F32.3: Severe depressive episode with psychotic symptoms

Depression is a mental illness. A number of different physical and mental causes have so far been found for depression. These causes may include a lack of certain hormones in the brain or stressful life events.

When you have depression, your mood is often very low over a long period of time. People with depression feel very low, for example, and cannot enjoy things as they used to. They may also feel listless or exhausted and find everyday activities harder than before. They can also lose interest in things they enjoyed before. They may also be finding it harder to concentrate and they may have lost confidence in themselves. Depression can also cause physical symptoms. This means you can no longer sleep very well, for example, or that you have lost your appetite.

Depression also alters your thinking or perception. This means, for example, you might see, hear or feel things that are not really there. It is also possible for you to misjudge reality, meaning you feel guilty for no reason or are convinced that you are poor, for example.