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[|Human|] my 27 year old son has to walk all the time, things have to be put in certain places because he says they are in his way. If I says the words ok or good-bye he wants me to say alright or later. He also eats certain foods because he does not want to get fat. Would these behaviors be ocd or anxiety?
[|AI|]  Hello thanks for asking from ChatDoctorOCD or obsessive compulsive disorder is an anxiety disorder. Obsessions are repetitive thoughts, ideas or impulses that are dominating, distressing and occurs in mind persistently. They produce significant distress to individual. In order to prevent the distress individual tries to do some ritualistic behavior that are called as compulsions. The symptoms your son is showing like putting thing in a particular manner can be due to Obsession of Orderliness, which is a common type of obsession, though detailed evaluation is needed to make diagnosis. His habit of asking alright or later when you say words like Ok or Goodbye can also be due to some underlying anxiety. I would advise you to take him to a psychiatrist for evaluation and treatment if needed. Thanks, hope this helps you.