The object in reporting this case, which might be termed dermatitis exfoliativa prenatal rather than neonatal, is to call attention to the undoubted development of this disease, or condition in utero. Ritter, in 1878, was the first to call definite attention to this condition; but in all cases reported by him and others since that time I failed to find a case reported as existing at birth. From two to five weeks after birth is given as the usual time of development of symptoms. Patient. —Baby R., male, was born at term, Feb. 8, 1909; normal labor; weight was 6½ pounds; the child was well-developed and seemingly of good vitality, as he breathed and cried well. Condition at Birth. —When the arms