Idzi Juda voted up John Doe's answer 10/7/2015 My son has an ear infection so his doctor gave him medicine for it for 10 days, now he doesn't want to eat and he only weighs 21pounds... the last thing I want is for him to drop weight again, what can I do? Take him back to the doctor. He may have the ear infection, but he may also have something else going on.