What is a common trait of depression as a mental disorder?

Depression, as a mental disorder, is characterized by a range of symptoms that can significantly impact an individual's ability to function in their daily life. This includes difficulties in performing everyday activities such as going to work, maintaining relationships, and managing personal care. The pervasive nature of depression can lead to a lack of motivation, energy, and interest in activities that were once enjoyable, further limiting one's ability to engage in life fully. This limitation is a core component of the disorder and highlights the seriousness of its effects on an individual’s overall quality of life.

Other options do not accurately reflect the nature of depression. For instance, while depression can affect people of all ages, it does not exclusively target the elderly. Additionally, depression is often linked with physical health problems, such as chronic pain or sleep disorders, contradicting the notion that it has no physical health effects. Lastly, depression is usually not short-lived; rather, it can persist for weeks, months, or even years if left untreated, making the idea that it typically lasts only a few days incorrect.