[Chronic toxic encephalopathies caused by metallic mercury]

Area of Science:

• Neuroscience
• Toxicology
• Psychology

Context:

• Assesses the neurological and psychological impact of chronic metallic mercury intoxication.
• Evaluates 24 male patients hospitalized for suspected mercury poisoning.

Purpose:

• To evaluate the nervous system's condition in chronic metallic mercury intoxication.
• To highlight the neurotoxic effects and irreversibility of mercury poisoning.

Summary:

• Neurological and psychological investigations identified frequent symptoms including headaches, dizziness, memory disturbances, and irritability.
• Psychological tests indicated organic brain damage in 21 cases, with slowed reactions, memory and attention deficits, and reduced intellectual efficiency.
• Electroencephalographic (EEG) findings were mostly normal or borderline, underscoring the sensitivity of psychological assessments.

Impact:

• Emphasizes the selective neurotoxicity of metallic mercury and the irreversible nature of its pathological changes.
• Stresses the importance of psychological testing for accurate diagnosis and assessment of mercury poisoning.
• Calls for enhanced prevention strategies to mitigate mercury poisoning risks.