Hypnosis has been shown to alleviate the subjective distress of patients with asthma: there were less frequent attacks, and less medication was required. 1
In another study comparing Hypnosis and relaxation therapy the improvement with the Hypnotherapy group was much greater. And only Hypnosis subjects showed an improvement in physiologic measures of respiration. 2
1 Maher-Loughnan, G.P. (1970). “Hypnosis and AutoHypnosis for the Treatment of Asthma.” International Journal of Clinical and Experimental Hypnosis, 18, 1- 14.
2 Maher-Loughnan, G.P., MacDonald, N., Mason, A.A. & Fry, L. (1962). “Controlled Trial of Hypnosis in the Symptomatic Treatment of Asthma.” British Medical Journal, 2, 371-376.