Women are being urged to know common symptoms which can hit "without warning".
According to the NHS, perimenopause is when you have symptoms before your periods have stopped. You reach menopause when you have not had a period for 12 months.
Both menopause and perimenopause can cause symptoms such as anxiety, mood swings, brain fog, hot flushes and irregular periods and can start years before your periods stop and carry on afterward. They can also have a big impact on your every day life.
