Q

Gynecology

What could cause me to get dizzy before my menstrual period?

A Answers (3)

  • A , Advanced Practice Nursing, answered
    Menstrual periods are the bleeding that results from the monthly changes in hormone levels. During the first half of the menstrual cycle, during bleeding and the weeks after that, the dominant hormone is estrogen. After ovulation, the dominant hormone is progesterone. Progesterone causes the lining of the uterus to mature. It also causes changes in special muscle tissue in the body called smooth muscle. These muscles are in the intestines and some women notice slowed intestinal action, constipation and gas in the weeks right before a period.

    These muscles are also in the walls of the arterial blood vessels. Typically these muscles contract to keep our blood evenly distributed throughout our body even though we change position or move rapidly. Think about a hose full of water. If you suddenly lift the hose, the water all flows downward and spills out. Blood in our vessels wants to flow downward the same as any other liquid. This would cause less blood flowing to the brain and result in a light headed or dizzy sensation. By contracting when we move, the smooth muscle in the arteries keeps the blood moving upward with us preventing these symptoms. Then progesterone enters the scene and slows this reaction, sometimes allowing a brief decrease in flow to the brain. Until their circulatory system adjusts, some women will then experience brief dizziness or lightheadedness during the progesterone dominant part of their menstrual cycle. 
    2 people found this helpful.
  • A OBGYN (Obstetrics & Gynecology), answered on behalf of
    What could cause dizziness before my menstrual period?
    Ever get dizzy right before your monthly menstrual cycle? In this video, OB/GYN Karin Stanton, DO, from Brandon Regional Hospital, discusses why you might feel disoriented.
    1 person found this helpful.
  • A OBGYN (Obstetrics & Gynecology), answered on behalf of
    This could be a premenstrual symptom. Some women have a complex interaction of hormonal variation and fluid balance in this time -- keep yourself hydrated and you may feel better. 
This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.
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