[Pathology of the natal cleft].

After defining the limits of the natal cleft, the author explains the process of establishing a precise diagnosis on the basis skin lesion. He describes successively: non-infiltrating eruptions or intertrigo, pigmented lesions, papular, papular-nodular, tuberculoid and tumoral eruptions, vegetating lesions, ulcerating and suppurative lesions. In each paragraph, he stresses the lesions which are usually confined to the natal cleft.