You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is An old man was brought to OP by his son telling that his father is having habit of washing his hands 'n' number of times and repetition of other daily routines as well. Characteristic of obsession are all, EXCEPT: and explain in detail?
According to the DSM-IV, obsessive-compulsive disorder (OCD) is characterized by recurrent obsessions or compulsions that are ego-dystonic and time-consuming and that interfere with normal functioning. Compulsions or compulsive behavior may result when patients engage in repetitive behavior in an attempt to reduce anxiety or cope with these obsessive thoughts. Obsessions refer to thoughts, ideas, or images which recur and are distressing or unwanted. Ref: Handbook of Neuropsychology and Aging edited by Paul David Nussbaum, 1997, Page 83.