There are many possible causes of deafblindness. The condition can either be present at birth or develop later in life.
Deafblindness from birth is known as congenital deafblindness.
It can be caused by:
In most cases, deafblindness develops later in life. This is known as acquired deafblindness.
A person with acquired deafblindness may be born without a hearing or sight problem and then later loses part or all of both senses. Alternatively, someone may be born with either a hearing or vision problem, and then later loses part or all of the other sense later on.
Problems that can contribute to acquired deafblindness include: