Obsessive-Compulsive Disorder (OCD) is a mental health condition marked by intrusive thoughts (obsessions) and repetitive behaviors (compulsions) that individuals feel compelled to perform. Common obsessions include fears of contamination or harm, while compulsions may involve excessive handwashing or checking behaviors aimed at reducing anxiety. These symptoms can significantly impair daily functioning and lead to distress. Diagnosis involves a thorough evaluation of symptoms, medical history, and psychological factors, often utilizing tools like the Yale-Brown Obsessive-Compulsive Scale (Y-BOCS). The Diagnostic and Statistical Manual of Mental Disorders (DSM-5) outlines criteria for diagnosis, emphasizing the impact on daily life. OCD can co-occur with other mental health issues, such as anxiety or depression. Symptoms typically begin in late childhood or early adulthood and may vary in severity over time. Effective treatment options include psychotherapy and medication, which can help manage symptoms and improve quality of life. Understanding the condition is crucial for those affected, as it often leads to feelings of shame or frustration