A member asked:

I noticed a lump on the back of my 4year old sons head tonight while putting him to bed.

11 doctors weighed in across 3 answers
Dr. Ira Rubin answered

Specializes in Pediatrics

Scalp lump: There are a few causes for "lump" in the scalp. If it moves, is soft, and not tender it is likely not important and either a lymph node or ingrown hair. If it is tender or does not move or hard, then have your doctor check it out.

Answered 12/18/2014

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Lymph node: There are thousands of lymph node located around the body that help screen out germs in the body serum before it returns to the circulation. There are many in the neck, head & behind the ear. At rest these are often 1/4 inch in diameter and may grow to marble sized when reacting to a stimulus. Bug bites, or viral infections can increase their size.They should shrink down to nl size over a few wks.

Answered 7/1/2014

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May be a lymph node: a bug bite or a contusion or......See if it goes away in a couple of weeks if child otherwise is acting normal.If it does not go away or child develops other symptoms have doctor check it.

Answered 1/21/2017

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