When too much wax is collected in the ear, a plug forms, sometimes causing hearing problems, sometimes not. Doctors advise not to use cotton wool ear sticks when cleaning your ears but instead to clean them regularly with little and no intrusive methods.
Earwax lowers the risk of infection and prevents the ear canal from feeling uncomfortable and itchy. It also helps to reduce the irritation that water causes when it enters the ear canal.
However, it is possible for the body to overproduce earwax, allowing it to build up and block the ear canal. A blockage can also occur if a person cleans their ears using a cotton swab, as this can push the earwax further into the ear canal.
The medical term for an earwax blockage is a cerumen impaction. People can usually treat this condition at home using simple household products.