OCD (Obsessive Compulsive Disorder) involves recurring intrusive thoughts (obsessions) that create intense anxiety, followed by repetitive behaviors or mental rituals (compulsions) performed to relieve that distress. Unlike everyday worry, OCD is cyclical — the relief from compulsions is temporary and actually strengthens the cycle over time. It often includes a persistent sense of doubt and an inability to tolerate uncertainty, even around thoughts that feel deeply out of character.