Background For centuries, physicians have observed a temporal relation between the occurrence of female-specific reproductive events and the symptoms of illness that traditionally have been classified as "mental". Objectives: study of phenomenology of postpartum psychosis. Methods: 60 female patients with postpartum psychosis during the first four weeks after delivery (patients group) and 30 female patents within the first four weeks after delivery not suffering any psychiatric disorders (Control group). The two groups were subjected to clinical psychiatric assessment using structured psychiatric interview of DSM -V, BPRS, HDRS and EPDS. Results: Postpartum psychosis was more in younger females than older and in primipara than multipara. The onset of symptoms of postpartum psychosis was more common in first week after delivery (mean 6.11 days), sleep disturbance, irritability and hypomanic symptoms are the most early symptoms of postpartum psychosis followed by anxiety, confusion and somatic complain. Mood congruent psychotic feature significantly more than mood non-congruent psychotic feature. Conclusion: postpartum psychosis is more common in younger and primipara females with onset of symptoms in first in first week after delivery. Sleep disturbance, irritability and hypomanic symptoms are the earliest symptoms of postpartum psychosis