Hi and thank you for your question. I am a verified Expert and I am happy to help you today. Ear infections are less common in adults than children mainly because of the eustachian tube changes that occur with maturity... however, adults do get ear infections, that can be caused by blockages due to a cold or other inflammation which can block the eustachian tube causing problems with drainage.
IF it is chronic... you would need to see an ENT to find and treat the cause.
Would once or twice a year be considered chronic?
I am so sorry you have waited so long for me, I was off line, working. No, if this is associated with a cold, that is typical if you are prone to ear infections.