A type of schizophrenia, usually starting at puberty, characterized by foolish mannerisms, senseless laughter, delusions, hallucinations, and regressive behavior.

青春期痴呆一种精神分裂症，通常始发于青春期，其特征为举止痴呆、傻笑、妄想、幻觉以及退化的举止。

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It is interesting that a type of accelerated brain growth is studied as almost exclusive to males with regressive autism.

FORBES: Is Being Female Protective Against Autism?