Abstract
To discuss the changes in cognitive function and related brain regions in patients with chronic benzene poisoning. Few studies have explored the damage to cognitive function that occurs in benzene toxic encephalopathy. It is important to identify early in the course of disease whether cognitive dysfunction is caused by benzene poisoning so that disease prognosis and appropriate treatment can be determined. We reported on the chronic benzene poisoning of a 41-year-old Han Chinese woman. The patient had graduated from primary school, and she had a cheerful and diligent personality. She had performed painting work for more than five years, and her primary work involved painting swivel chairs. The primary reasons she attended the psychiatric clinic were loss of appetite, she had experienced fatigue for more than 2 months, and she had had memory loss for a month. These symptoms seriously impacted the patient’s daily life and ability to work. The patient’s husband expressed concern that she could not recognize acquaintances, could not find her way home, and had lost approximately 5 kg per month over two months. We analyzed changes in this chronic benzene poisoning patient’s cognitive function with cognitive function assessments and magnetic resonance imaging (MRI). Measurements were taken on presentation to hospital, during the patient’s hospitalization, and three months following discharge. Long-term exposure to benzene can damage the central nervous system. However, it is difficult to recognize when cognitive impairment is caused by chronic benzene poisoning, as it rarely presents with a decline in cognitive function as the primary clinical manifestation. Atypical symptoms, such as decreased immune function and gastrointestinal issues, may be the first symptoms to appear, and these atypical symptoms are difficult to detect in the early stages of disease. Regular screening of high-risk groups is required to significantly reduce the incidence of systemic damage caused by benzene poisoning.
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