抄録
Despite the tact that cases of Leucoderma senilis among patients visiting this outpatient department are being met, almost no literatures related to this illness are found. In view of the above, the author investigated, cases of this illness clinically and histologically, the outline of the findings of which are described in the present paper.
Leucoderma senilis occurs clinically in the persons under 30 years of age in some instances. The size ranges from millet grain to soy-bean size (generally rice grain size) . It appears as well defined pale or light yellow colored spot. In the majority of the cases, the shape is round. No desquamation or vasicle formation is recognized. It does not form scar, and accompanies no sensory abnormalities. As the age progresses, the frequency becomes larger. No tendency of increase in size is recognized. It appears more frequently on the trunk especially in the median region. The most resemblingg disease to this is white spot disease. Hawever, it lacks changes in E. f.
Histologically, the change in E, f. and K. f. is generally the characteristic senile changes. Leucoderma senilis appears in the region where the senile changes, which is a physiological phenomenon, is specifically marked.
In short, Leucoderma senilis is one of the physiological phenomena, and it seems that the disease appears where senile changes are specifically marked.
