Day-to-day mood changes after childbirth: further data.

The depression and lability of mood which have been previously reported on the fifth day after childbirth are largely restricted to women with high neuroticism scores. The pattern of day-to-day mood changes is the same after Caesarian section as after vaginal delivery, but there is no 'day five' phenomenon after hysterectomy. Post-partum mood disturbance is less prominent in women who return home 48 hours after delivery.