Abstract
In this paper, the authors report on the cases of occupational dermatitis which were recently observed. These cases are the contact dermatitis by Penta chlorophenol (P.C.P.) which were observed in some electric company. The patients are anexperienced factory girls who are about 20 years old. The common symptoms are erythema and edema one the exposed skin, and manifest urinary urobilinogen. Manifest eosinophilia was observed in the one of these patieants. After the recovery from dermatitis, when the patients return to their posts, the dermatitis acutely grew worse. The reaction of p.c.p. was 100% positive in patch test, therefore, these cases were diagnosed as contact dermatitis by p.c.p.