Other potential causes for vasospasm are hemorrhages, homocysteinemia, head injury, acute intermittent porphyria, sickle cell disease, anorexia nervosa, Susac syndrome, mitochondriopathies, tumors, colitis ulcerosa, Crohn's disease, arteriosclerosis and drugs.asospasm, its role in the pathogenesis of diseases with particular reference to the eye. Flammer J(1), Pache M, Resink T. Author information: (1)University Eye Clinic Basel, Mittlere Strasse 91, CH-4012, Basel, Switzerland.