Do you wash your hands repeatedly? Have you repeatedly washed your clothes? Do you repeatedly check that the doors and windows are closed? Do you repeatedly organize your things? Do you struggle with the appropriateness of what you say? Do you double-check the work you do? Are these behaviors OCD? These behaviors may seem unnecessary to different people, but to the person involved, they are necessary to make him or her feel comfortable. These behaviors can be considered more or less compulsive, but rest assured that normal people also have compulsive behaviors, and compulsive behaviors are not the same as OCD. In other words, there are normal people who sometimes perform certain repetitive actions, but these actions are self-controlled and do not interfere with their lives or studies, nor do they cause emotional anxiety or internal pain. So what is OCD? OCD is a type of anxiety disorder, a group of neuropsychiatric disorders with obsessive-compulsive thinking and compulsive behavior as the main clinical manifestations, characterized by the coexistence of conscious obsessions and counter-compulsions, and the repeated intrusion of meaningless, even against one’s will, thoughts or impulses into the patient’s daily life. Patients know that the behavior or consciousness comes from themselves, but it is totally unnecessary, so they try to resist it, but they can never control it. The strong conflict between the two makes them feel great anxiety and pain, which affects their study, work, interpersonal communication and even life. And people who are restrained, hesitant, frugal, cautious, careful, overly attentive to details, good thinkers, demanding perfection, but too stereotypical and inflexible are prone to it. If OCD affects a large number of people, outpatient treatment is still recommended. So how is OCD treated? Treatment of OCD suggests that medication combined with psychotherapy works well. The main medications are paroxetine, fluvoxamine, sertraline and fluoxetine, which are 40 to 60 percent effective. Additional medications include chlorpromazine, venlafaxine extended-release, citalopram and mirtazapine as second-line medications that require adjunctive risperidone therapy. Psychotherapy is to help patients with OCD to have a correct and objective understanding of their personality characteristics and the disease they suffer from, to lose their mental baggage to reduce their insecurity, to learn reasonable ways to correspond, and to increase their self-confidence to reduce their uncertainty. They are: 1. cognitive-behavioral therapy treatment; 2. cognitive apprehension therapy; 3. morita therapy is considered a classical therapy for OCD; 4. aversion therapy, etc. Introduce the more popular and simple methods of controlling OCD: one is called the 15-minute principle, that is, when you have the compulsive intention to do something, suggest yourself to postpone it for 5 minutes before doing it, it can prolong the reaction time of compulsive behavior, and the delay can be gradually extended later, during which you can shift your attention and do some other interesting and constructive activities. Another kind of people who always compulsively check can try this method. If you always have to check the door lock, try to lock the door carefully and slowly, keeping this action deeply in your mind and telling yourself, “The door is now locked, I see that the door is locked!” In this way, you get a deep impression that the door is locked, and when the compulsive thought arises tell yourself firmly that you have done it.