Obsessive-compulsive disorder (OCD) is a mental health condition characterized by unwanted, intrusive thoughts (obsessions) and repetitive behaviors or mental acts (compulsions). People with OCD often feel compelled to perform these rituals in order to reduce the anxiety or distress caused by their obsessions. OCD can significantly impact daily functioning and quality of life, and is typically treated with a combination of therapy, medication, and lifestyle changes. Research in this area focuses on understanding the causes of OCD, developing effective treatments, and improving the overall understanding of the disorder.