Fifty five cases of all 64 out-patients with HD in Kyoto Prefecture could be followed up.(Eleven cases of them were dead. Two cases were readmitted to leprosaria.) Their ages ranged from 28 years to 88 years (mean 54.3). About 61% of them were over 50 years old.
Eight cases of 30 lepromatous or borderline cases (26.7%) experienced relapse in their course.The period of time from bacterial negativity to relapse were 3 years to 13 years. Some troubles of patients and the control problem of HD in Japan was discussed briefly.