It has been suggested that facial hemiatrophy is primarily caused by arrest of development during the growing period or toward the end of it. As far as I have been able to find, there are no typical cases recorded that support this view, and as a prominent feature in the case that is the object of this paper which I offer as an apology for introducing a subject that has been thoroughly and repeatedly discussed and is perhaps not of special interest. Since Parry1first described facial hemiatrophy, particularly since the investigations of Romberg,2Lande3and Eulenburg,4the number of reported cases has been slowly increasing; nevertheless the disease is still comparatively infrequent; for this reason, and from the fact that our knowledge of nerve influence on nutritive processes is incomplete with but one satisfactory postmortem examination,5the etiology and pathology of the disorder can
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Theophil Klingmann (1907) studied this question.