Complications from diphtheria may include:
- Blocking of airway
- Damage to the heart muscle (myocarditis)
- Inflammation of nerves, which may cause nerve damage (polyneuropathy)
- Lung infection (respiratory failure or pneumonia)
For some people, diphtheria can lead to death. Even with treatment about 1 out of 10 diphtheria patients die. Without treatment, as many as 1 out of 2 patients can die from the disease.
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