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Encephalopathy from lead poisoning masquerading as a flu-like syndrome in an autistic child

Mathew George1, Matthew M Heeney, Alan D Woolf

  • 1Harvard Medical Toxicology Program, Children's Hospital Boston, 300 Longwood Ave, Boston, MA 02115, USA. Drmg456@gmail.com

Pediatric Emergency Care
|May 11, 2010
PubMed

Insights

Childhood lead poisoning can cause acute encephalopathy, especially in children with autism and pica. Early diagnosis is crucial, as symptoms can mimic viral illnesses, delaying critical treatment for lead exposure.

Area of Science:

  • Pediatric Neurology
  • Environmental Health
  • Toxicology

Background:

  • Childhood lead poisoning, though rare, poses significant risks for encephalopathy.
  • Pediatric patients with developmental disabilities and pica are particularly vulnerable to high lead exposure levels.
  • Distinguishing lead poisoning symptoms from baseline behaviors in autistic children can delay diagnosis.

Observation:

  • A 4-year-old autistic boy presented with gastrointestinal issues and behavioral changes, initially suspected as a viral syndrome.
  • Worsening symptoms including pallor, vomiting, abdominal pain, and altered consciousness prompted further evaluation.
  • Radiographic evidence of paint chips and a blood lead level of 216 µg/dL confirmed severe lead poisoning.

Findings:

  • The patient exhibited symptoms consistent with lead-induced anemia and acute encephalopathy.
  • High blood lead levels (216 µg/dL) were detected, significantly exceeding the reference range.
  • The case highlights the diagnostic challenge in differentiating lead poisoning from other conditions in vulnerable children.

Implications:

  • Prompt recognition of lead poisoning in at-risk children is critical for timely intervention and preventing severe neurological damage.
  • Clinician awareness and suspicion are paramount for accurate diagnosis, especially in emergency settings.
  • This case underscores the need for vigilance regarding environmental lead exposure in children with developmental disabilities.

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