What are the causes of ear infections?

Ears are connected..: ...To the nose on the inside, with a tunnel called the eustacian tube. Anything that happens in the nose, can affect the ear.

Virus or bacteria: Since ear infections are "infections" there must be an infecting agent. Typically the child begins with a viral URI (cold) which may or may not involve the middle ear. After a few days, bacteria that normally inhabit the nose or throat may begin to multiply in the middle ear, causing the infection that is often treated with antibiotics.

Bacteria or viruses: Ear infections are like other illnesses we get; they are caused by bacteria or viruses that get into our system and cause use to get sick. If your doctor believes it is a bacteria causing the ear infection antibiotics may be prescribed to help, although if it is caused by a virus antibiotics will not help, only time.

Ear infections: Most ear infections, or otitis media, occur in children. Their eustachian tubes have not fully matured yet, and as a result, they are predisposed to ear infections. They are also exposed to more infections than older individuals.