[Demodecidosis and rosaceiform dermatitis]

The authors refer those dermatoses called "Rosacea like" or "Rosaceiform Dermatitis" that always offer differential diagnosis with Rosacea. Some of them supposedly have tuberculous etiology. They employ a special technique the "skin surface biopsy" to demonstrate the presence of "Demodex folliculorus" inside the pilosebaceous follicle in sufficient amount, that one can consider a certain etiologic role in those dermatoses. For treatment they use "Danish ointment" (olysulphine ointment) with important improvement of the disease. They conclude that this technique and the improvement obtained with the treatment can help to make an adequate correlation and diagnosis of such dermatoses.