Depression : Depression is a mental health disorder characterized by persistent feelings of sadness, loss of interest or pleasure in activities, and a range of physical and cognitive symptoms. It is more than just feeling sad or going through a rough patch; it is a serious condition that can impact a person's thoughts, emotions, and daily functioning. Common symptoms of depression include: Persistent feelings of sadness, emptiness, or hopelessness. Loss of interest or pleasure in activities once enjoyed. Changes in appetite, weight loss or gain. Sleep disturbances, such as insomnia or excessive sleeping. Fatigue or loss of energy. Difficulty concentrating, making decisions, or remembering things. Feelings of worthlessness, guilt, or self-blame. Restlessness or irritability. Physical symptoms like headaches, digestive problems, or chronic pain. Thoughts of death or suicide. Depression can vary in severity, ranging from mild to severe. It can occur as a single episode or be recurren