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    Diagnostic criteria for 299.00 Autistic Disorder

A.    A total of 6 or more items from (1), (2), and (3), 
              with at least two from (1), and one each from (2) and (3):

        (1)  qualitative impairment in social interaction, as manifested 
               by at  least two of the following:
                 (a) marked impairment in the use of multiple nonverbal behaviors 
                      such as eye-to-eye gaze, facial expression, body posture, and 
                      gestures to regulate social interaction
                 (b) failure to develop peer relationships appropriate to 
                       developmental level 
                 (c) a lack of spontaneous seeking to share enjoyment, interests, 
                       or achievements with other people (e.g., by a lack of showing, 
                       bringing, or pointing out object of interest)
                 (d) lack of social or emotional reciprocity

      (2)  qualitative impairments in communication as manifested by at 
               least one of the following:
                 (a) delay in, or total lack of, the development of spoken language
                      {not accompanied by an attempt to compensate through 
                       alternative modes of communication such as gesture or mime}
                 (b) in individuals with adequate speech, marked impairment in the 
                       ability  to initiate or sustain conversation with others
                 (c) stereotyped and repetitive use of language or idiosyncratic 
                 (d) lack of varied, spontaneous make-believe play or social
                        imitative  play appropriate to developmental level.

      (3)  restricted repetitive and stereotyped patterns of behavior, interests, 
             and activities, as manifested by at least one of the following:
                (a) encompassing preoccupation with one or more stereotyped 
                     and restricted patterns of interest that is abnormal either in 
                     intensity or focus
                (b) apparently inflexible adherence to specific, nonfunctional 
                      routines or rituals
                (c) stereotyped and repetitive motor mannerisms (e.g. hand or 
                      finger  flapping or twisting, or complex whole-body movements)
                (d)  persistent preoccupation with parts of objects

B.     Delays or abnormal functioning in at least one of the following 
          areas, with onset prior to age 3 years:

               (1) social interaction
               (2) language as used in C social communication, or
               (3) symbolic or imaginative play.

  C.    The  disturbance  is  not  better  accounted  for by 
            Rhett's Disorder or (CDD) Childhood Disintegrative Disorder.


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