The inclusion of lichen planus among the familial dermatoses was apparently first suggested by Hallopeau and Leredde1 in 1900, although several observers, including Lustgarten,2 Brocq3 and Ormerod,4 had previously reported cases of the disease with a familial background. Lustgarten's original case was published in 1894.
There have been four important résumés of the subject. Jadassohn5 in 1900 collected 12 cases from the literature, including 2 from his own practice. Three of these cases were of the conjugal variety. Galewsky6 in 1921 reported a total of 31 cases, 26 of the consanguineous variety and 5 of the conjugal type. Spitzer's7 comprehensive article appeared in 1924. He carefully reviewed the entire subject, adding 15 cases to the previous report, 3 of these being from his own practice. Juliusberg8 covered familial lichen planus in the Handbuch in 1931 and presented the arguments for the contagious
SAFFRON MH. FAMILIAL LICHEN PLANUS: A REPORT OF FOUR CASES OF LICHEN PLANUS IN ONE. Arch Derm Syphilol. 1940;42(4):653–655. doi:10.1001/archderm.1940.01490160113015
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