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How can chronic syphilitic infection cause atrophy of the brain cortex?

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atrophy One example of atrophy is the progressive loss of bone that occurs in osteoporosis (normal bone shown on left; osteoporotic bone shown on right).

Chronic syphilitic infection can lead to atrophy of the brain cortex through a condition known as general paresis, a manifestation of late-stage neurosyphilis.

In this condition, the spirochete Treponema pallidum invades the central nervous system, resulting in widespread destruction of brain tissue. This process causes the brain to shrink and decrease in weight, with the atrophy primarily affecting the cortex, most notably in the frontal area. The physical shrinkage of the brain tissue is fundamentally caused by the loss of a significant number of nerve cells within the cortex. This progressive degeneration is associated with severe clinical symptoms, including dementia, personality changes, and paralysis.1234

It is essential to recognize that syphilis is a serious, potentially life-threatening disease that requires prompt medical intervention. Fortunately, treatment with penicillin can effectively stop the progression of the infection and prevent further neurological damage.23