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Chronic inorganic mercury induced peripheral neuropathy
1Department of Neurology, Chang Gung Memorial Hospital and Chang Gung University, Taipei, Taiwan.
Acta Neurologica Scandinavica
|January 6, 1999
Summary
Inorganic mercury poisoning from herbal drugs caused severe axonal sensorimotor polyneuropathy. This nerve damage can lead to persistent neurological deficits, even after treatment.
Area of Science:
- Neurology
- Toxicology
- Nerve Pathology
Background:
- Polyneuropathy can result from various toxic exposures.
- Inorganic mercury is a potent neurotoxin with known adverse effects.
Observation:
- A patient developed progressive paralysis after ingesting herbal drugs containing mercuric sulfate.
- Electrophysiological studies indicated an axonal polyneuropathy affecting both motor and sensory nerves.
- Sural nerve biopsy revealed axonal degeneration, demyelination, and loss of large myelinated fibers.
Findings:
- Inorganic mercury intoxication can induce severe axonal sensorimotor polyneuropathy.
- The observed nerve pathology includes axonal degeneration and demyelination.
- A predominant loss of large myelinated fibers was noted in the sural nerve.
Implications:
- Neurological deficits resulting from inorganic mercury exposure may be long-lasting.
- This case highlights the neurotoxic potential of mercury in herbal remedies.
- Understanding mercury-induced neuropathy is crucial for diagnosis and management.