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Unlike AS individuals, those with OCD, may be effected socially due to their need to perform their rituals, however the significant impact on communication, social reciprocity, and interpersonal relationships, is not observed to the same degree. A person can be diagnosed with both Asperger Syndrome and OCD. In fact, it is common for a person with AS or autism to also have an additional neurological or behavioral disorder. One way to recognize the difference between the obsessive and stimming behavior of Aspergers versus OCD behavior is to figure out whether the behavior is driven by anxiety.
Yes it is possible, however I do not know if there are available statistics.