Premenstrual Dysphoric Disorder (PMDD) wasn’t officially recognised as a mental health disorder until 2013 – but it can affect around one in 20 women. PMDD is a severe form of premenstrual syndrome that causes extreme mood swings, depression and anxiety before a period due to hormone changes. According to research, the condition affects around one in 20 women – of those, one in three attempt suicide, and half self-harm. Dr Lynsay Matthews, based at the University of the West of Scotland, has bee