[Lead poisoning revealed by severe encephalopathy : pica does exist in France (author's transl)]

Area of Science:

• Pediatric Neurology
• Toxicology
• Environmental Health

Background:

• Lead poisoning is a significant public health concern, particularly in children, due to its potential for severe neurodevelopmental consequences.
• Chronic exposure to lead, often through pica (ingestion of non-food items), can lead to insidious onset of symptoms.
• Subacute lead encephalopathy represents a critical manifestation of lead toxicity, characterized by neurological dysfunction.

Observation:

• A 6-year-old child presented with subacute lead encephalopathy, manifesting as coma, seizures, and cerebrospinal fluid (CSF) abnormalities.
• The neurological symptoms developed after a 2-week period of gastrointestinal distress, including vomiting, abdominal pain, and constipation.
• Diagnosis was confirmed through specialized porphyrin metabolism studies, highlighting metabolic alterations indicative of lead poisoning.

Findings:

• The case underscores the rare occurrence of childhood lead poisoning presenting as subacute encephalopathy in France.
• Pica was identified as the likely route of chronic lead exposure in this pediatric patient.
• Porphyrin metabolism studies proved essential in confirming the diagnosis of lead poisoning.

Implications:

• This case highlights the importance of considering lead poisoning in the differential diagnosis of unexplained neurological symptoms in children, even in regions where it is considered rare.
• Early identification of lead exposure sources, such as pica, is critical for timely intervention and prevention of irreversible neurological damage.
• The review of pathogenesis, clinical features, diagnosis, and treatment provides valuable insights for clinicians managing similar cases.