A case of ergotism is presented to illustrate the role of duplex ultrasonography in the diagnosis and management of this nonatherosclerotic cause of peripheral arterial disease. Historical aspects of ergotism are discussed together with reference to the relative vulnerability of different segments of the arterial circulation. Our case emphasizes the potential for complete reversibility of the vascular changes if recognized early.
Keywords: Claviceps purpurea; duplex ultrasound; ergot alkaloids; ergotism; lower limb ischemia; migraine; nonatherosclerotic arterial disease.