There are a lot of children with mumps this year, but if your son has had the MMR vaccination he is unlikely to get mumps.You do not notice any swelling of his neck or one side of his face and he does not have a fever so this also makes mumps unlikely.I agree with you that your son probably has sprained the muscle/s in his neck. This usually takes a day or two to heal but is very painful. So he will need Panado for the pain.
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