Diseases
Medications
Related eMedTV
Health Channels

Symptoms of Botulism

Symptoms of botulism can take time to appear, but once they do, they can include double vision, slurred speech, blurred vision, and muscle weakness. Infants with early symptoms of botulism often feed poorly and appear lethargic. If a doctor cannot identify and treat the illness early, symptoms of botulism progress to paralysis of the arms, legs, trunk, and respiratory system.

 

Symptoms of Botulism: An Introduction

The cause of botulism is a nerve toxin (botulinum toxin) that is produced by the bacterium Clostridium botulinum. Though there are a few different types of of botulinum toxins, the symptoms of botulism produced by each toxin are quite similar.
 
When a person becomes infected with botulism, he or she does not immediately develop symptoms of botulism. The time between a person becoming infected with botulism bacteria and the beginning of botulism symptoms is called the "botulism incubation period." The botulism incubation period varies based on the type of botulism. For foodborne botulism, the incubation period is generally between 18 to 36 hours, but can occur as early as 6 hours or as late as 10 days.
 
The incubation period for infant botulism is between 3 and 30 days, while the incubation period for wound botulism is around 10 days.
 

Early Symptoms of Botulism

Once they occur, the earliest symptoms of botulism may include:
 
  • Muscle weakness
  • Double vision
  • Drooping eyelids
  • Slurred speech
  • Dry mouth
  • Blurred vision
  • Difficulty swallowing.
     
Infants with early symptoms of botulism may display:
 
(Symptoms of Botulism Continued: Page 2)
Add this article to your Favorites     Email this article     Print
Written by/reviewed by: Arthur Schoenstadt, MD
Last reviewed by: Arthur Schoenstadt, MD