My daugher age four has a lump one month later on her leg on the location of a recent injection.?

she feels fine, but it's a big knot. We are off to the doctor later this week. Not too concerned, any thoughts.

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Answer:
it's common. Here is a site of the possible reactions to certain vaccine injections

http://www.med.umich.edu/1libr/pa/pa_imm…

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Answer:
My daughter had the same thing for about 2 months but the doctor said it was fine it cleared up and is now fine

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Answer:
completely normal.