Obsessive-Compulsive Disorder (OCD) is a chronic mental health condition characterized by unwanted, intrusive thoughts called obsessions and repetitive behaviours or mental rituals known as compulsions. These thoughts often create anxiety, pushing individuals to perform actions like excessive cleaning, checking, counting, or seeking reassurance to feel relieved. OCD can interfere with daily life, work, relationships, and emotional well-being. It may develop due to genetic factors, stress, trauma, or chemical imbalances in the brain. With proper diagnosis, therapy such as CBT and ERP, and sometimes medication, individuals can manage symptoms effectively and regain control over their lives.