Mood disorders are mental health conditions that primarily affect a person's emotional state. They can cause significant changes in mood, leading to feelings of sadness, irritability, or extreme happiness. Common types of mood disorders include depression and bipolar disorder, which can impact daily functioning and overall quality of life. These disorders can result from a combination of genetic, biological, environmental, and psychological factors. Treatment options often include therapy, medication, and lifestyle changes, which can help individuals manage their symptoms and improve their emotional well-being. Early intervention is important for better outcomes.