The opportunity for studying a group of patients with lead poisoning was afforded because of the contentious situation that arose in the adjudication of their disability. In one group of individuals a diagnosis of chronic lead poisoning had been made from six months to two years prior to coming under my observation. The problem that arose was to determine whether or not protracted subjective symptoms were due to chronic lead poisoning and, if so, to institute a method of treatment. There were nine patients in this group.
In a second group, more recently exposed to either the ingestion or the inhalation of lead, a diagnosis of subacute lead poisoning had been made. The problem here was to determine the best type of treatment to bring about recovery. There were four patients in this group.
In a third group (two patients) it was alleged that subjective symptoms of recent origin were