Al-Bulchih's Medicine for the Soul

Abu Zaid Al-Bulchih, who studied with Al-Kindi, produced a medical and ethical work that is highly reminiscent of Arazi's matched treatises on bodily and spiritual medicine. Both sections are clearly influenced by Galen. The part on medicine for the soul deals with disorders like anger, sorrow again, and the pathological obsessive thinking known in Arabic as waswas. He also emphasizes the link between the body and the soul, saying for instance that those obsessive thoughts can be the result of a build up of yellow bile.