You have set your question out very well and given all the important information that I need to know.You really do not need to worry. Firstly two tests have confirmed that your little girl is HIV negative.The lump you feel is behind her left ear only and she does not have any other lumps or swellings. Importantly you mention that the lump moves easily. This is a small lymph gland behind her ear.This kind of swelling usually occurs when a baby has had some cradle cap in the past or after a baby has had an ear infection.Sometimes the cause is not very obvious. The swelling will go away by itself with time.
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