A prospective study was carried out on 123 patients with enlarged thyroid swelling between 16-65 years age group, attending Department of Surgery, Sree Gokulam Medical College and Research Foundation, Venjaramoodu, Trivandrum during the period of November 2011 to February 2013. All patients were examined clinically after taking a detailed history. Then, they were investigated by TFT, USG, X-ray neck, X-ray chest, Indirect Laryngoscopy, FNAC and anti-thyroid antibody tests and all the patients were subjected to surgery and histopathological examination (HPE) of the specimen obtained. Finally, all the reports were analysed and the age distribution, sex distribution and the incidence of thyroiditis in study population was obtained. During the study period 123 cases of enlarged thyroid underwent surgery, out of which 115 were females and 8 male patients. The age of the patient in the study ranged from 16-65 years, the youngest being 16 years old and oldest being 65 years. Maximum cases being in between 30-50 with mean age of 42.3 years. The study showed a female predominance. The incidence of thyroiditis in the present study was 38.21% (47 cases).