In a recent study researchers investigated the effects of inhalation aromatherapy on sleep disturbance in elderly individuals with dementia. In 19 participants, normal sleep was observed for a 20-day control period, inhalation aromatherapy was then applied for a 20-day intervention period, and the control and intervention periods were compared. During the intervention period, essential oils were placed nightly on towels around the participants’ pillows. The results showed total sleep time was significantly longer in the intervention period than in the control period. The duration of the longest sustained sleep period was significantly longer and early morning awakening was significantly less in the intervention period compared to that in the control period.
Aromatherapy massage with lavender essential oil has been found to relieve pain in patients with knee osteoarthritis.
After nephrectomy (a surgical procedure to remove all or part of a kidney), 2 drops of ginger essence to a 2 × 2-inch gauze was attached to the patients’ collars to allow patients to inhale the evaporated essence and then repeated every 30 min for 2 hours. The results showed significantly lower nausea intensity and number of vomiting episodes after the surgery compared to a control group.
When added in addition to usual anti-inflammatory medication, rose essential oil aromatherapy provided significant pain relief in women with painful periods.