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Brief Report: Childhood Disintegrative Disorder as a Likely Manifestation of Vitamin B12 Deficiency


Childhood disintegrative disorder is a rare disorder, characterized by regression of acquired skills after a period of normal development. The case of childhood disintegrative disorder presented here was found to have vitamin B12 deficiency and hyperhomocysteinemia on extensive evaluation to find a probable cause for regression. This case illustrates the need for a thorough evaluation of all cases of childhood disintegrative disorder so that treatable causes of regression, like vitamin B12 deficiency, are not missed.

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Correspondence to Savita Malhotra.

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Malhotra, S., Subodh, B.N., Parakh, P. et al. Brief Report: Childhood Disintegrative Disorder as a Likely Manifestation of Vitamin B12 Deficiency. J Autism Dev Disord 43, 2207–2210 (2013).

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  • Childhood disintegrative disorder
  • Autism
  • Vitamin B12 deficiency
  • Hyperhomocysteinemia