This type of infection is often caused by blowing the nose, one nostril at a time, driving the fluid through the eustachian tube into the middle ear. Never blow one nostril at a time. The most common earache happens in the outer ear . Fortunately, it is also the easiest to cure, because it can be reached from the outside. This is where home remedies are always effective.
Prevention is better than a cure.
An ounce of prevention is worth a pound of cure. First of all, we have to know what causes earaches. Wind which hits my ears. Getting chilled, especially while wet. Having water trapped in the outer ear.