1.Depressive Disorders:

• Major Depressive Disorder (MDD): A severe form of depression that involves persistent feelings of sadness, hopelessness, and a loss of interest in daily activities.
• Persistent Depressive Disorder (Dysthymia): A chronic but less severe form of depression, lasting for two years or more.
• Seasonal Affective Disorder (SAD): A type of depression that occurs at certain times of the year, typically in the winter months due to reduced sunlight.
• Postpartum Depression: Depression that occurs after childbirth, often involving intense feelings of sadness, anxiety, and exhaustion.
  2.Bipolar Disorder:

  Bipolar disorder involves extreme mood swings that include emotional highs (mania or hypomania) and lows (depression). There are two main types:

  Bipolar I Disorder: Characterized by manic episodes that may last for at least a week or require hospitalization, along with depressive episodes.
  Bipolar II Disorder: Involves hypomanic episodes (less severe than full mania) and depressive episodes.