Can an earache on one ear thats not infected be caused by blocked earwax on the other ear?

No: In an older child or adult, ear pressure or pain can be from an ear infection, a sinus infection, or some problem inside the throat. A doctor can evaluate to see if a patient needs antibiotics, oral or ear drops. Sometimes, migraine headaches or a case of shingles can cause ear pain. Swimmer's ear (ear canal skin infection) is likely if one has been swimming and if moving the earlobe causes pain.