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Kurt Huldschinsky found that children suffering from rickets show psychic manifestations such as catatonia during the florid stage of the disease, mental deficiency during the stage of repair and paranoid tendencies still later. The author is convinced that psychic symptoms constitute a real psychosis, which manifests itself in a schizophrenic form with its various stages. When the schizophrenic stage disappears, the stage of dementia develops.
The author differentiates between metarachitic mental debility which accompanies severe forms of rickets and real idiocy which may be associated with rickets. The author also believes that parallel with the rachitophrenia there are pathologic processes in the brain which manifest themselves mainly in the enlargement of the brain. The author determined the enlargement by his study of the index of the skull.
DEMENTIA RACHITICA: STUDIEN UEBER DIE SOGENANNTE ZEREBRALE KOMPONENTE DER RACHITIS.. Am J Dis Child. 1927;34(4):714. doi:10.1001/archpedi.1927.04130220192021