During pregnancy and the postpartum period, many women feel a wide range of overwhelming emotions such as anticipation, happiness, excitement, confusion, pleasure, satisfaction, as well as worry, frustration, or sadness/guilt. They are more prone to mental problems during the postpartum period. Maternity blues, puerperal psychosis, and postnatal depression are the three most common postpartum mental illnesses. The spectrum of postpartum illnesses is broad. It  encompasses a wide spectrum of feelings, ranging from mild agitation, irritability, and weepiness to severe agitation, delusions, disorientation, and delirium.  On one end of spectrum lies postpartum blues, which is most common and remits on its own, while on the other end lies postpartum psychosis which in severe form is a medical emergency and needs urgent hospitalisation,  postpartum depression is moderately common.
Peripartum mood disturbances classification
Peripartum mood disturbances epidemiology and demographics
Bipolar disorder classification
Attention-deficit hyperactivity disorder classification
Personality disorder other diagnostic studies
Menopause classification
Bipolar disorder complications and prognosis
Delayed puberty classification