Depression is characterized by a persistent low mood that can affect quality of life. If symptoms usually only occur in the winter months, it may be seasonal affective disorder (SAD), or major ...

Depression and seasonal affective disorder (SAD) share similar symptoms, but depression can occur at any time of the year, while SAD follows a recurring seasonal pattern. For a SAD diagnosis, a person ...

The word depressive comes from depress, stemming from the Latin depressare, meaning to “press down.” For example, we can press down on, or depress, a lever. Whenever you press a key or drive and step ...

Perhaps you have a longstanding tendency to feel flat and gloomy, and those close to you see you as a pessimistic kind of character. You can't recall the last time you slept well, you feel tired all ...

Where mood disorders can cause temporary or fluctuating changes in mood, personality disorders cause symptoms that remain consistent over time and across a range of situations. For example, bipolar ...