Premenstrual Dysphoric Disorder (PMDD)

PMDD, which presents as an intense case of PMS with irritability and mood changes, is caused by hormonal shifts in the final week before your period, also known as the luteal phase. Symptoms usually diminish after your period arrives. PMDD affects between 5 and 10 percent of women. It is important to note that women with PMDD have an increased risk of mood symptoms during perimenopause.