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Organic hallucinosis

Last edited: 4/15/2026

Overview

Organic hallucinosis refers to a syndrome characterized by hallucinations without a primary psychiatric disorder, often associated with underlying metabolic or neurological conditions affecting organic acid metabolism 2.

Diagnosis

  • Measurement of organic acids in urine or blood using advanced techniques such as GC-MS is crucial for diagnosis 1.
  • Enzyme activity assays in cells may be necessary for definitive diagnosis 1.
  • Specific metabolic disorders like glutamine synthetase deficiency or pyridoxine-dependent convulsions should be considered in differential diagnosis 2.
  • Management

  • Treatment focuses on addressing the underlying metabolic disorder; specific enzyme replacement or cofactor supplementation may be indicated based on identified deficiencies 2.
  • Pyridoxine supplementation is critical for pyridoxine-dependent convulsions, though specific dosing details are not provided 2.
  • Supportive care including symptomatic treatment for neurological complications is essential 2.
  • Special Populations

  • No specific guidance provided for pregnancy, pediatrics, elderly, or comorbidities in the given abstracts 12.
  • Key Recommendations

  • Utilize GC-MS for screening and diagnosis of organic acidurias to identify underlying metabolic causes 1 (Evidence: Moderate).
  • Consider specific metabolic deficiencies like glutamine synthetase deficiency in the differential diagnosis of organic hallucinosis 2 (Evidence: Moderate).
  • Provide targeted supplementation or replacement therapy based on identified metabolic deficiencies 2 (Evidence: Weak).
  • References

    1 Scott D, Clinton Frazee C, Garg U. Screening of Organic Acidurias by Gas Chromatography-Mass Spectrometry (GC-MS). Methods in molecular biology (Clifton, N.J.) 2022. link 2 Leonard JV. Recent advances in amino acid and organic acid metabolism. Journal of inherited metabolic disease 2007. link

    Original source

    1. [1]
      Screening of Organic Acidurias by Gas Chromatography-Mass Spectrometry (GC-MS).Scott D, Clinton Frazee C, Garg U Methods in molecular biology (Clifton, N.J.) (2022)
    2. [2]
      Recent advances in amino acid and organic acid metabolism.Leonard JV Journal of inherited metabolic disease (2007)

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