Knot In Leg After Vaccine

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Knot In Leg After Vaccine

My son has a small knot in his leg, it showed up after his 4 month vaccines. It has been 2 weeks since he had them (vaccines) and the knot is still there. Why is this and is it common? Should I take him to the doctor?

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Knot In Leg After Vaccine

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May 14, 2009

Vaccine Lump
by: Baby Help Line - Annie

Hi,
I don't think it is anything to be concerned about, some vaccines do leave a mark or lump in sensitive babies, but next time you see the doctor or health nurse make sure you show them.

If you think it is inflamed or sore then it would pay to get it checked out promptly. Most babies have only minor reactions to vaccines but some do have unpleasant reactions.

All the Best with your lovely wee boy,

Annie Desantis

Sep 02, 2011

lump and indention in upper thigh after shots
by: Anonymous

Hello,
When my daughter got her 4 month shots her little legs lumped up really good she will now be 6 months old on 10/10 and still has a lump and a indention where one of her shots was placed.
Im getting a little worried
Thank you

Sep 02, 2011

A lump after the DtaP is normal
by: Paula (Baby Help Line)

Hi,

The lump that your girl still has on her leg is quite a common side efect of the diphtheria-acellular pertussis-tetanus vaccine (DtaP).

It is due to a small inflammation caused by some of the injection material in the vaccine. It is not dangerous, nor painful and it can actually take even months to disappear.

The lump usually comes right afte the shot, but it can also appear a few days later. As long as it doesn't hurt or change in size or color, there is no need to worry. It is called a DtaP granuloma, by the way.

If your daughter seems to be bothered by it, r if you worry that it isn't related to the shot, have her health-care provider look at it.

You can find more information on DtaP side effects in this article from KidsGrowth. (Opens is new window)

I hope this helps,

Paula

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