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The variety of symptoms and combinations of symptoms are usually dividedinto four major groups, according to Lisa Rarick, M.D., medical officer inFDA's division of metabolism and endocrine drug products. Breast tenderness,swelling, weight gain, and bloating comprise one group of symptoms. A secondgroup includes emotional changes such as depression, forgetfulness, crying, insomnia, and confusion. A third group involves headaches, food cravings(especially sweets), increased appetite, fatigue, and dizziness. The fourth group includes anxiety, nervous tension, mood swings, and irritability.

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