Social anxiety disorder (SAD) is a common but unfortunately under-recognised type of anxiety disorder, leading to 80 percent of the patients undertreated. SAD can present a diagnostic challenge to primary care physicians as patients may present only when they start developing psychiatric comorbidities. Recognition and differential diagnosis of SAD is important for primary care physicians as untreated SAD is highly associated with comorbidities and significant functional impairment. Our objective in presenting this case series of SAD is to illustrate the typical and atypical ways SAD can present, including an atypical case that may have been mistaken as a psychotic disorder. We also discuss the differential diagnosis, Etiology and treatment for SAD. SAD often shows good response to medications and psychotherapy. Hence, it is important to recognise and provide appropriate early intervention to prevent the development of comorbidities and improve function.