Menstrual disorders are a disruptive physical and/or emotional symptoms just before and during menstruation, including heavy bleeding, missed periods and unmanageable mood swings.
The female reproductive system is a very complex one, and is often susceptible to disorders. These disorders are a constant worry for women throughout the world and for most of their lives.
Menstrual problems affect women not just physically, but mentally and emotionally too. Yoga has been recommended down the ages especially for women to control and manage menstrual problems.
Menstruation, or period, is normal vaginal bleeding that occurs as part of a woman's monthly cycle. Every month, your body prepares for pregnancy. If no pregnancy occurs, the uterus, or womb, sheds its lining. The menstrual blood is partly blood and partly tissue from inside the uterus. It passes out of the body through the vagina.

Periods usually start between age 11 and 14 and continue until menopause at about age 51. They usually last from three to five days. Besides bleeding from the vagina, you may have Abdominal or pelvic cramping Lower back pain Bloating and sore breasts Food cravings Mood swings and irritability Headache and fatigue

Premenstrual syndrome, or PMS, is a group of symptoms that start before the period. It can include emotional and physical symptoms.

Consult your health care provider if you have big changes in your cycle. They may be signs of other problems that should be treated.

NIH: National Institute of Child Health and Human Development