Generalized anxiety disorder (GAD) is one of the most common mood disorders and is characterized by periods of increased worry and anxiety for a minimum of 6 months associated with at least three other symptoms of the following: restlessness, muscle tension, sleep disturbance, irritability, difficulty concentrating, and fatigue [1]. The prevalence of GAD in the primary care setting is variable worldwide and estimated to range between (2.4 %-31.2 %) [2-4]. GAD was linked to many contributing factors based on many studies, such as age [5], gender [6], level of education, marital status, family income, living place and religious views [7], each of which was found to affect the probability of getting GAD in a person's life time expectancy [2]. Patients with GAD usually become chronic sufferers as they may have their symptoms for many years before being diagnosed and managed [8]. Many studies showed that people affected with GAD were lower producers in the society and higher users of health care services than other people not affected with GAD [9-11]. Patients with GAD usually present with somatic symptoms, which are common initial presentations. Examples of such symptoms are chest pain, fatigue, headache, insomnia and abdominal pain [12]. The most common somatic complaint was gastric related symptoms (14.6%) [13], resulting in difficult detection among primary care settings and only 10% of them presented to a psychiatrist. Anxiety disorders have been studied in the gulf area [14,15], while locally in Jordan surveys were done regarding panic disorder [16] and dental anxiety disorder [17] This is the first study that addresses the prevalence of GAD in family medicine practice (FMP) ,the aim of this study is to find the prevalence of GAD and its association with socio-demographic variables and common chronic diseases. Methods This cross-sectional study was conducted on 811 patients aged 16 and older attending