Stress and puerperal psychosis.

Eighty-eight in-patients admitted to a psychiatric mother-and-baby unit and 80 randomly selected recently delivered women in the general population were interviewed using the LEDS. Only five of 33 patients (15%) with puerperal psychosis had provoking agents, which is less than the figure for women in the community (36%). Provoking agents were present in only 8 of 25 patients with post-natal depression, but they were present in seven of nine patients with pre-natal depression and eight of nine women in the community with pre-natal depression.