IN 1918 one of us (G. M. M.) and Parounagian published an article entitled Folliculitis Ulerythematosa Reticulata in which several statements subsequently were found to be misleading or erroneous. Priority for the first case of this disease was credited to Whitehouse (1913). Credit was given Pernet for publishing the first clinical description and the first clinical photograph in a bona fide case (1916). Darier, in 1920, and others, later, called attention to Thibierge's recognition of the disease as an entity and his publication of a short clinical account under the legend acne vermoulante, in Brocq's La pratique dermatologique, in 1900. MacKee and Parounagian were familiar with this report, but failed to identify the case as one of folliculitis ulerythematosa reticulata. We now declare the case to be a bona fide example of the disease. Also, as it is the first published report that we have been able to find, priority