Equestrian perniosis associated with cold agglutinins: a novel finding

Reports of equestrian perniosis are rare in the literature and in the cases previously described there have been no abnormal laboratory investigations . We describe two patients with equestrian perniosis who had persistently e levated titres of cold agglutinins, We discuss the relationship of these co ld agglutinins to the pathogenesis of perniosis and other related skin diso rders.