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The occurrence of lichen planus in three members of one family is of sufficient rarity and interest to warrant reporting.
REPORT OF CASES
Case 1.—
M. R., a white woman aged 38, consulted me in June 1941 for an eruption on the legs, arms and trunk. The lesions were of the chronic variety of lichen planus. No other lesions were found. Pruritus was intense.
Case 2.—
E. R., the 36 year old sister of M. R., consulted me in December 1947 for an eruption which had been present for three years. Examination revealed typical lichen planus on both axillas and the chest area. Pruritus in this case was intense.
Case 3.—
C. P., aged 63, mother of M. R. and E. R., consulted me in December 1947 for a widespread eruption of lichen planus. The lesions involved the legs, thighs, arms, chest and the back of the hands. Severe pruritus required local x-ray