There are two classifications of ear infections: acute and chronic. An ear infection is generally considered acute when it occurs with a sudden onset and resolves within a timely manner (usually three weeks). When a person experiences recurrent ear infections, or an infection that does not go away, it is considered chronic.
No. An earache does not necessarily mean that you have an ear infection. Sometimes, you may experience ear discomfort or pressure due to a cold or sinus infection.
No. Some ear infections are viral—and taking antibiotics for a viral condition would offer no help in treating the infection.