<s>[INST] Hi, Back in December 2010 i had severe pain in the top of my head basically left side of the skull and my left nose was blocked and when i went to the doctor told that might be sinus.It went away but that pain comes when i am exposed to extreme cold or heat.2 weeks before i found a pea size lump behind my right ear, but it does not hurt just that it worries me that it should not be anything serious as at times I get boils in my scalp that look like swelling and at times get pain behind ear and neck.Please suggest, [/INST] Hi,dear thanks for the query to my HCM virtual online clinic.Its my pleasure to help you .My diagnosis-You should not worry of the lump behind the rt ear as its due to the-Lymphadenitis due to the Scalp infection.This lump is not related to the left-Sinus infection  with lt nasal blockage.Treatmenit-a-Consultation with Surgeon for the rt ear lump and sinus infection.Ent Surgeons opinion is also needed.b-For the lump behind rt ear-Antibiotics with NSAIDs tb would resolve scalp and lymadentis lump.Sinus infection would also get relieved with this.if it doesnt in 1 wks time Ent Surgeons opinion is needed .Dont worry and act fast.This would solve your worrysome query.Hope this would solve your query.Wellcome to my HCM clinic once again.Have a Good Day. </s>