Pain relief assessment by aromatic essential oil massage on outpatients with primary dysmenorrhea: A randomized, double-blind clinical trial.
J Obstet Gynaecol Res. 2012 Mar 22. Epub 2012 Mar 22. PMID: 22435409
Departments of Applied Cosmetology Senior Citizen Welfare and Business, Hungkuang University IVF Taiwan Women's Well-Being Clinic, Taichung Department of Obstetrics and Gynecology, Changhua Lin-Li-Min Women and Children's Hospital, Beidou Township, Changhua County Graduate Institute of Gerontic Technology and Service Management, Nan Kai University of Technology, Caotun Township, Nantou County, Taiwan.
Aim: This study assessed the effectiveness of blended essential oils on menstrual cramps for outpatients with primary dysmenorrhea and explored the analgesic ingredients in the essential oils. Material and Methods: A randomized, double-blind clinical trial was conducted. Forty-eight outpatients were diagnosed with primary dysmenorrhea by a gynecologist and had 10-point numeric rating scales that were more than 5. The patients were randomly assigned to an essential oil group (n = 24) and a synthetic fragrance group (n = 24). Essential oils blended with lavender (Lavandula officinalis), clary sage (Salvia sclarea) and marjoram (Origanum majorana) in a 2:1:1 ratio was diluted in unscented cream at 3% concentration for the essential oil group. All outpatients used the cream daily to massage their lower abdomen from the end of the last menstruation continuing to the beginning of thenext menstruation. Results: Both the numeric rating scale and the verbal rating scale significantly decreased (P < 0.001) after one menstrual cycle intervention in the two groups. The duration of pain was significantly reduced from 2.4 to 1.8 days after aromatherapy intervention in the essential oil group. Conclusion: Aromatic oil massage provided relief for outpatients with primary dysmenorrhea and reduced the duration of menstrual pain in the essential oil group. The blended essential oils contain four key analgesic components that amount to as much as 79.29%; these analgesic constitutes are linalyl acetate, linalool, eucalyptol, and β-caryophyllene. This study suggests that this blended formulacan serve as a reference for alternative and complementary medicine on primary dysmenorrhea.