Two cases of epidermolysis bullosa simplex localisata associated with anodontia, hair and nail disorders were described. It was proved that the reported cases represented a new syndrome, which had previously not been published. The syndrome was named "Syndroma Kallin" after the surname of the two patients. Two genetic theories were suggested: an autosomal recessive genetic trait or a gonadal mosaicism with an early dominant gene mutation.
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Nielsen et al. (1985) studied this question.