For about three weeks a month, Clara manages her job as a project manager in Westmoor well. Then, in the days before her period, everything slips. “I read the same email five times and still don’t understand it,” says the 34-year-old, who was diagnosed with ADHD three years ago. “I forget meetings, I snap at people, and the treatment that normally works feels like it has stopped.”
Her experience is common, doctors say, and for a long time it was largely overlooked. A growing body of research suggests that hormonal changes across the menstrual cycle can noticeably affect ADHD symptoms, and that the week before a period is often the hardest.
What happens in the body
ADHD is linked to how the brain uses dopamine, a chemical messenger involved in focus, motivation and reward. Estrogen appears to support dopamine activity. In the first half of the cycle, estrogen rises and many women feel sharper. After ovulation, and especially in the days before bleeding starts, estrogen falls, and for some women the brain’s ability to stay focused and regulate emotions falls with it.
Many women describe it as if someone turned their ADHD up to maximum for a week. That is not imagination; it fits what we know about hormones and the brain.
Dr. Hannah Lindqvist, psychiatrist at Elmbridge University Hospital
Studies also suggest that women with ADHD are more likely to experience severe premenstrual symptoms, including premenstrual dysphoric disorder, a condition marked by intense irritability, anxiety and low mood in the days before a period.
What women report
A survey of more than 600 women with ADHD by the national ADHD patients’ association, shared with News. ahead of publication, shows the scale. Seven in ten said their symptoms became clearly worse in the week before their period. Four in ten had missed work or study because of it, and more than half said no doctor had ever asked them about their cycle.
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