Fig. 3

Effects of inhalation of lavender oil and its major components (linalool and linalyl acetate) on the severity of pain in patients with postherpetic neuralgia. Results are presented as mean ± standard error of the mean. ^##P < 0.01, ^###P < 0.001 vs. Pretreatment. ^*P < 0.05, ^**P < 0.01, ^***P < 0.001 vs. Control. VAS = visual analogue scale