Nervous system involvement in three children poisoned with thallium

Three children, aged 5, 10 and 16 years, poisoned with thallium were hospitalized. Two of them suffered from sensory-motor and third from sensory polyneuropathy and additionally in the youngest child severe encephalopathy was observed. The correlations between serum and urine thallium levels and the severity of the symptoms in the course of the disease were positive. The most severe symptoms and the highest thallium level were observed in the youngest child.