[Porphyria cutanea tarda after uptake of lead--a case contribution to the etiology].

It is reported on a case of porphyria cutanea tarda. With the exception of a low risk lead exposure during work no etiological factor could be revealed. Body deposits of lead were established by means of Ca-EDTA provocation. After cessation of exposure which was suggested to be the cause the state of health markedly improved. Thus, compensation due to occupational disease was recommended to workers insurance.