The simultaneous occurrence of lichen striatus and lichen planus is extremely rare and the resemblance of one dermatosis to the other is (in some instances) so pronounced that a differential diagnosis, based on clinical manifestations, is difficult. The patient forming the subject of this report exhibited eruptions of lichen striatus and lichen planus at the same time, during the period in which lie was under my observation. It was believed fitting at this time to dedicate this presentation to

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... he memory of Felix Pinkus' who has contributed to the knowledge of both affections (1, 2) and also was much interested in the problem of linear distribution of skin diseases in general (3, 4, 5, 6).