Autonomic dysfunction in botulism B: a clinical report

Area of Science:

• Neurology
• Toxicology
• Autonomic Nervous System Disorders

Background:

• Botulism B can manifest with significant autonomic nervous system involvement.
• Cholinergic autonomic dysfunction presents unique diagnostic and therapeutic challenges.

Purpose of the Study:

• To describe nine cases of botulism B with predominant autonomic cholinergic effects.
• To evaluate the efficacy of late-stage antitoxin and guanidine treatment.
• To question the validity of
• acute autonomic neuropathy
• as a distinct clinical entity.

Main Methods:

• Clinical case series presentation.
• Detailed symptom documentation including visual and oral dryness.
• Electromyographic studies to assess neuromuscular function.

Main Results:

• All patients exhibited blurred vision and dry mouth.
• Impaired salivary and lacrimal secretion persisted for months.
• Electromyography showed no neuromuscular involvement in the absence of overt clinical signs.

Conclusions:

• Botulism B can present with prolonged cholinergic autonomic dysfunction.
• Late-stage antitoxin administration is not recommended; guanidine may be beneficial.
• The concept of "acute autonomic neuropathy" requires further scrutiny in light of these findings.