Dose the Clinical Characteristics of Patients with Anxiety due to Hyperthyroidism Differ from Patients with Generalized Anxiety Disorder? A Comparative Study

Background: Hyperthyroidism is associated with anxiety symptoms. Objectives: The aim of this study was to compare the clinical characteristics of patients with anxiety due to hyperthyroidism with patients with generalized anxiety disorder (GAD). Materials and Methods: This study was carried out in Abolfazl psychiatry clinic affiliated to Bushehr University of Medical Sciences from September 2012 to September 2013. Anxiety severity and characteristics of thirty-two patients with GAD was compared to 34 patients with anxiety due to hyperthyroidism. Hamilton anxiety rating scale (HAM-A) was used to evaluate the overall anxiety severity and anxiety symptom profile of the two groups. Results: There was no significant difference regarding overall anxiety severity between the two groups (P = 0.65). Autonomic symptoms were more sever in hyperthyroid patients (P = 0.003) whereas anxious mood and fears were more prominent in patients with GAD (P = 0.001 and P = 0.045, respectively). Conclusions: This study demonstrated that patients with GAD reported more psychology symptoms of anxiety whereas physical symptoms of anxiety were more prominent in hyperthyroid patients. Our findingsmayhelp differentiate these two disorders in the clinic, based on the symptom profile. However, it is important to note that this study is preliminary, and larger studies are needed to confirm the results.