Obsessive-Compulsive Disorder (OCD) is a mental health condition characterised by persistent, unwanted thoughts (obsessions) and repetitive behaviours or mental acts (compulsions) that individuals feel driven to perform. These obsessions and compulsions can cause significant distress, interfere with daily activities, and reduce quality of life. Common symptoms include excessive cleaning, checking, counting, or arranging. OCD can affect anyone, regardless of age or background, but effective treatments are available. Cognitive Behavioural Therapy (CBT), particularly Exposure and Response Prevention (ERP), and medication can help manage symptoms and improve overall well-being.