The most common problem is hearing loss. Sometimes the hearing loss is mild, lasts only a few weeks and gets better by itself but it may go on for many months.

Children under the age of seven (with the highest risk at two years of age).
Children who have a parent who smokes.
Children who suffer from frequent coughs and colds.
Boys.
Children with a brother or sister who has also suffered from glue ear.
Children who have been bottle-fed.
Children who attend day care and come into contact with other children during winter or spring.
Children with certain genetic conditions, such as Down's syndrome.
Children with an anatomical abnormality affecting the face, such as a cleft palate.