Objectives The purpose of this study was to analyze the clinical characteristics of patients with hyperhidrosis who visited a Korean medicine hospital, and provide information on treated hyperhidrosis, based on Sasang Constitutional medicine. Methods A retrospective review was made of the electronic medical record (EMR) charts for 157 Korean patients with hyperhidrosis (90 male, 67 female), who first visited hospital from January 1, 2013 to December 31, 2017. The following information was collected: sex, age, height, weight, body mass index (BMI) and clinical data (diagnosis, area of onset, duration of illness, aggravating factors, medication, healing process, et al). Results There were many patients with hyperhidrosis, in the other of So-Yang type (57.3%), Tae-Eum type (35.0%) and So-Eum type (7.6%). The proportion of male was higher than female. The most common area of hyperhidrosis was hands and feet (44.0%), followed by generalized whole body (27.4%) and head and face (25.5%). The cure rate of hyperhidrosis was 32.2%, and effectiveness rate of that was 72.7%. In individual patients, the better the usual health condition expressed by original symptoms, the higher the possibility of treatment success, with shortened duration of treatment and reduced total drug dose. The most frequent treatment modality in patients was that consistently improved, and this duration of treatment was statistically significantly shorter than that experienced worsening of excessive sweating during treatment period (p<0.001). Conclusions This study provides some original information on the Korean patients with hyperhidrosis, and suggests the suitability of Sasang Constitutional medicine as treatment methods for hyperhidrosis.