Copied from BBC-Health. Some advice at the bottom for sufferers. Hope you don't have a huge gain.
What causes it? No one knows the exact cause of PMS, although it's thought to be linked to the fluctuations in hormone levels that occur throughout the menstrual cycle.
Women with low levels of the chemical serotonin have been found to be particularly sensitive to levels of the hormone progesterone, which is thought may lead to symptoms of PMS.
Who's affected?
Women of all ages suffer from PMS, but it can be more of a problem at these times:
- After childbirth
- During your 30s and 40s
- During times of stress
PMS is often worse at either end of a woman's reproductive life, around puberty and before the menopause.
What's the treatment?
If you think you're suffering from PMS, it may be helpful to keep a diary of symptoms so you can identify patterns and possible triggers.
Keeping to a diet that's low in salt, fat and caffeine but high in fibre, and eating small, regular meals, can be beneficial. Make sure you put aside time for regular exercise and relaxation.
Vitamins B6 and E, gamma-linolenic acid (GLA), calcium and magnesium have all been recommended for PMS. Many women find them helpful, but studies have mixed results. Flower oils such as evening primrose and starflower (which contain GLA) have also been advocated by some sufferers.
Your GP can give advice if these simple measures don't work. They may recommend hormone treatments - either the
contraceptive pill or progestogen may be helpful.
Selective serotonin reuptake inhibitors (SSRIs), a type of antidepressant drug often used to treat depression and anxiety, may also be prescribed.
The
National Association for Premenstrual Syndrome can provide further information on possible treatments.