The knots in the ears might be a connective tissue that was formed after the piercing of the ear lobes. In the ear that got infected, the knot is expected to be slightly bigger, because more fluids were produced during the inflammation and there is a possibility that not all of it was absorbed again. The residue might have turned into connective tissue. A single knot in the ear lobe might be a tumor and, therefore, has to be checked by an ear, nose and throat specialist.
Even if there are more knots in the ears, a check-up with a doctor is recommended since, without an examination,a tumor cannot be ruled out. The tumors might be benign if they do not tend to grow. So, please do not disturb yourself before the examination, but do visit a specialist for the ear, nose, and throat. He might tell you more about the options of removing these knots.
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