The British Journal of Psychiatry 153: 396-399 (1988)
© 1988 The Royal College of Psychiatrists
Effects of thallium poisoning on intellectual function
C Thompson, J Dent and P Saxby
Charing Cross and Westminster Medical School.
A student of chemistry was treated for thallium poisoning. Seven months
after his ingestion of thallium, intelligence tests were performed on the
patient and his non-identical twin brother, who was of similar educational
background. These indicated severe deterioration in intellectual function
of the patient, particularly in memory and performance abilities. Tests 13
months after ingestion showed little general improvement.