This essay examines mental illness through a sociological lens, arguing that it is, in part, a social construct. It begins by defining mental illness and exploring its causes, including biological, environmental, and genetic factors. The main body of the essay then delves into three key sociological theories: functionalism, conflict theory, and symbolic interactionism. Functionalism is used to explain how societal views and expectations can impact individuals with mental illness, while conflict theory highlights how social inequalities and power dynamics contribute to mental health issues. Symbolic interactionism is employed to analyze how interactions and the meanings people assign to mental illness shape individual experiences. The essay concludes by summarizing the arguments and reiterating the significance of understanding mental illness within a social context.