Volunteers (N = 59) who met both NIMH and an adjusted DSM-III-R criter
ia for moderate to severe Late Luteal Phase Dysphoric Disorder or prem
enstrual syndrome (PMS) were administered the Coping Inventory for Str
essful Situations (CISS) intermenstrually and premenstrually in counte
rbalanced order. Participants reported significant increases in emotio
n-oriented coping and significant decreases in task, avoidance, and so
cial diversion-oriented coping premenstrually. Results provide more sp
ecific understanding of the coping style changes which occur during PM
S and, contrary to previous research, suggest that PMS stress may impa
ct women in a manner which makes them less likely to use social suppor
t in coping. Utilization of coping knowledge is suggested for therapis
ts with clients who report difficulties resulting from PMS.