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"The options we have are contraception, which helps reduce the symptoms of PMDD. Also you've got the options of treating the actual symptoms with CBT and antidepressants."

Contraception remains the primary course of treatment for women living with PMDD, but for women who wish to become pregnant this poses a dilemma.

The Welsh government said it was "determined to improve the diagnosis, treatment and awareness of conditions affecting women", including PMDD.

PMDD, which is a severe cyclical, hormone-based mood disorder linked to periods, is thought to affect more than one in 20 women.

Lead author Dr Sophie Hodgetts said the study "clearly highlights the need for greater clinical recognition of the interpersonal impact of PMDD".