Depression symptoms refer to the indications or signs that a person may be experiencing depression, which is a mental health disorder characterized by persistent feelings of sadness and loss of interest in activities. These symptoms can vary from mild to severe and may include changes in appetite, sleep patterns, energy levels, concentration, self-esteem, and suicidal thoughts or actions. It's important for individuals experiencing these symptoms to seek professional help as depression is treatable with therapy, medication, or a combination of both.