Premenstrual Syndrome

(PMS; Premenstrual Tension Syndrome)


Premenstrual syndrome (PMS) is a disorder marked by physical and emotional symptoms. It affects women 1-2 weeks before the beginning of their menstrual period.
The Menstrual Flow
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While the exact cause is not known, PMS may be related to certain factors (environmental, metabolic, or behavioral) that may make a woman more vulnerable to the hormonal changes that occur during menstruation.

Risk Factors

PMS most often occurs in women aged 25-40 years. Other factors that may increase your chance of PMS include:
  • Going off birth control pills
  • Major life stress
  • Depression


PMS may cause:
  • Irritability
  • Mood swings
  • Anxiety
  • Depression
  • Diminished self-esteem
  • Difficulty concentrating
  • Sleep problems
  • Appetite changes, such as sugar and/or salt cravings, or overeating
  • Weight gain
  • Fatigue
  • Bloating
  • Headache
  • Breast swelling and tenderness
  • Palpitations
  • Lightheadedness
  • Gastrointestinal upset
  • Muscle pain
Symptoms usually improve when bleeding starts (menstrual period).


You will be asked about your symptoms and medical history. A physical exam will also be done.You will be asked to keep a detailed record of your monthly physical and emotional symptoms. If caused by PMS, these symptoms will likely occur 1-2 weeks before your menstrual period. You may have PMS if symptoms occur at the same phase of the menstrual cycle each month.

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