목적: Freys syndrome is an infrequent complication after parotidectomy and its incidence varies from 23.5% to 50.8% in the literature. The objective of this study was to evaluate the actual incidence and clinical characteristics of Freys syndrome. 방법:We studied 31 patients who underwent parotidectomy for parotid tumor and received Minors starch-iodine test. The mean follow-up period was 66 +/- 26.1 months (minimum 24 to maximum 118 months). The Freys syndrome was evaluated using the questionnaire for the assessment of the subjective symptom and Minor's starch-iodine test for the objective measurement at the 1, 3, 6, and 12 months and then every 6 or 12 months after the surgery. 결과:Freys syndrome was confirmed in 11 patients (35.5%) by the iodine test. The mean onset of Freys syndrome at the Iodine test was 9.21 months (+/- 6.60 months) after parotidectomy. Fifteen patients (48.4%) including the 9 patients (29.0%) with positive iodine test complained about gustatory sweating and flushing. The onset of the subjective symptom was 11.27 +/- 6.96 months after the surgery. There was a significant correlation between the severity of the iodine test and the subjective symptoms (P=0.040). Various factors such as size of tumor, incision method, and extent of parotidectomy did not correlate with the Freys syndrome. 결론:The incidence of Freys syndrome was 35.5%, and the onset was about postoperative 9 months at the Iodine test.