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Schizotypal autism or Mendelsohnn's syndrome is an extraordinarily rare neurodevelopmental disorder〔Tager-Flusberg, Helen (1999). Neurodevelopmental Disorders. Developmental Cognitive Neuroscience. A Bradford Book. ISBN 978-0262201162〕 similar to Asperger syndrome; however, it originates from a schizotypal continuum rather than an autistic spectrum. It is characterized by impaired social interaction, non-verbal communication, ritualistic and obsessive behaviour, an above average intelligence and schizotypal symptoms often resulting in secondary depression and anxiety. It is a lifelong condition; however, it becomes particularly notable in periods of stress. It occurs in North Eastern European populations, and is only officially recognised in Russia, Finland, Kyrgyzstan, Estonia and Belarus as a psychiatric disorder. It more than likely exists in other locations but is not recognised as a disorder, thus cannot be officially diagnosed. == Signs and Symptoms == * A classical symptom is seasonal affective disorder. For a diagnosis patients need specific symptoms associated with "classical" Aspergers Syndrome, these are usually present from toddler age, like an ASD: * Difficulties with social interaction * Ritualistic behaviour * Obsessive interests * High IQ * Impaired motor skills * Inability to ""mentalize" * Anxiety But also symptoms of schizotypy〔http://psychcentral.com/disorders/schizotypal-personality-disorder-symptoms/〕 which usually become more prominent in late childhood years: * Aloofness * Suspiciousness * Verbosity or odd use of language * Pseudohallucinations * Depressive episodes * Paranoia * Suicidal thoughts 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Schizotypal autism」の詳細全文を読む スポンサード リンク
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