My 12 yo son has a tiny round lump in his ear lobe. It can't be seen but can be felt when touched. On pressing there is some discomfort. He told me about it yesterday, said it has probably been there a few weeks and has been the same size as far as he can tell. No apparent pain or visual discoloration. Can this be a fat or lipid deposit that will go on its own or should I take him to a doctor? If so, paediatric or dermatologist? Please advise.