Premenstrual syndrome

Premenstrual syndrome (PMS) is a combination of symptoms menstruating women can experience one to two weeks prior to their period.

Prevalence
Katrina Berne reports a prevalence of 70% for increased/severe PMS (premenstrual syndrome).

Symptom recognition
PMS or an irregular menstrual cycles is a recognized reproductive system symptom of ME/CFS in the Canadian Consensus Criteria. PMS is not mentioned in the International Consensus Criteria for ME.

Notable studies

 * 2011, Gynecological History in Chronic Fatigue Syndrome: A Population-Based Case-Control Study