While it is common to occasionally feel moody, sad, or apathetic, some people experience these emotions for prolonged periods. Depression can cause these emotions to become quite severe, to the point of affecting their quality of life. Depression is a serious mental health condition that can cause severe physical symptoms, too. It is crucial to be aware of some common signs of the condition and seek help quickly. 1. Feeling hopeless Depression may cause a person to have frequent feelings of hopelessness. This is often accompanied by a persistent feeling of not contributing anything worthwhile to one’s personal, social, or professional life. Although no significant adverse life event may have occurred, the feelings of hopelessness and worthlessness make the person feel like a failure. This is because depression is a complex disorder brought about by faulty mood regulation by the brain, stressful life events, and genetic factors. It is believed that several of these forces are responsible for the onset of depression. Usually, feelings of hopelessness may last for a while and occur repeatedly over time. Sometimes, these can be persistent for more extended periods, too. 2. Experiencing difficulty managing moods Another common sign of depression to look out for is frequent mood swings.