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Is there pain, redness
and swelling present of the affected ear lobe. If yes, it could be due to infection called otitis externa
with possible chondritis
associated. It can occur due to excessive cleaning of the ears and also possible by using irritating ear plugs. You should avoid use of those ear phones. Apply cool pack on the area to get relief from pain and swelling. You need to consult ENT Surgeon to examine you and prescribe antibiotics if necessary. Otherwise pain killers may help under medical supervision only.