Probably every physician who has treated enuretic children has observed that more than one case of enuresis frequently occurs in a single family. The tendency has been, however, to explain the familial incidence on an environmental basis. The theory that the condition is a conduct disorder has recently been supported by Hamill1 and Beverly.2 From observations made at the University of Minnesota it seems probable that the occurrence of enuresis3 in a child is determined primarily by a hereditary factor and only secondarily by environmental or emotional causes. The purpose of this paper is to present data supporting this thesis.
Information has been collected for 59 clans, including 221 fraternities, in which, of a total of 787 individual members, 239 are known to have been enuretic. In order to secure adequate data for this study, the parents of the child representatives of each clan have repeatedly been
FRARY LG. ENURESIS: A GENETIC STUDY. Am J Dis Child. 1935;49(3):557–578. doi:10.1001/archpedi.1935.01970030003001
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