<unk> , commonly known as an ear infection, is an infection or inflammation of the middle ear. This inflammation often begins when infections that cause sore throats, colds, or other respiratory or breathing problems spread to the middle ear. These can be viral or bacterial infections. Seventy-five percent of children experience at least one episode of<unk>  by their third birthday. Almost half of these children will have three or more ear infections during their first 3 years. It is estimated that<unk> al costs and lost wages because of<unk>  amount to $5 billion a year in the United States. Although<unk>  is primarily a disease of infants and young children, it can also affect adults.
Otitis media
Strep throat
Otitis externa
Rhinosinusitis
Mastoiditis
Typhlitis
Rhinitis
Chondritis