Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Botulism, also known as botulinus intoxication is a rare but serious paralytic illness caused by botulinum toxin which is metabolic waste produced under anaerobic conditions by the bacterium Clostridium botulinum. All forms lead to paralysis that typically starts with the muscles of the face and then spreads towards the limbs. In severe forms, it leads to paralysis of the breathing muscles and causes respiratory failure. Learn more about botulism, its causes, symptoms and treatment in the following pages.