Irregular periods can happen for a number of reasons one of which is related to perimenopause. While a single irregular period should not be cause for alarm, frequent occurrences tends to cause mental strain. Your doctor should be able to analyze the reasons for irregular periods and suggest a solution. Medications are not always necessary and lifestyle changes can often set things right. If you must take medications for treating problems related to irregular periods, talk to your doctor about natural or herbal supplements. More detailed information on this topic is available at http://www.herhealthplus.com/irregular-periods-perimenopause-01-0632.php