MMR Vaccine Side Effects

MMR Vaccine Side Effects to Report

There are a number of rare but potentially serious side effects with the MMR vaccine that you should report immediately to your healthcare provider. These include but are not limited to:
 
  • A high fever
  • Any unusual behavior changes in a child, aside from the usual fussiness that typically occurs after vaccinations
  • A seizure
  • Persistent, inconsolable crying (in a child) lasting for three hours or more
  • Temporary low blood platelets, which may increase the risk of bleeding
  • Deafness
  • Weakness, tingling, or paralysis, which may be signs of Guillain-Barré syndrome
  • Long-term coma, seizures, or decreased consciousness
  • Permanent brain damage
  • Signs of an allergic reaction, such as:
     
    • An unexplained rash
    • Hives
    • Itching
    • Swelling of the mouth or throat
    • Wheezing
    • Difficulty breathing.
 
It should be noted that many of these side effects have been reported so rarely that it is impossible to say with certainty that the problem was actually related to the MMR vaccine.
 

Other Reported Side Effects

Other MMR vaccine side effects that have been reported include but are not limited to:
 
  • Inflammation of the fat layer under the skin (panniculitis)
  • Fainting
  • Headaches
  • A general ill feeling (malaise)
  • Irritability
  • Inflammation of the pancreas (pancreatitis)
  • Diarrhea, nausea, or vomiting
  • Inflammation of the salivary glands (parotitis)
  • Diabetes
  • Muscle pain
  • Lack of muscle coordination
  • Widespread inflammation or malfunction of nerves
  • Paralysis of eye muscles, which may cause double vision or other vision problems
  • Pneumonia
  • Sore throat, cough, or runny nose
  • Skin reactions at the injection site
  • Various eye problems
  • Testicular swelling.
     
A Dose of Reassurance for Parents of Picky Eaters

MMR Vaccination

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