Like every September 16th, we celebrate today the World Day of this syndrome that it is the cause of the majority of deafblindness’ cases, but…
Do you know what Usher Syndrome is?
Its name is given by the British ophthalmologist that described on 1914 many cases on which the link between congenital deaf and retinitis pigmentosa (it generates visual impairment) was emphasized.
Its transmission is genetic, therefore is a hereditary disease. Both father and mother they must be carrier of the responsible gene.
Its incidence is very low; therefore, it is considered as one of the rare diseases.
There are some types of Usher Syndrome among which we highlight:
Type I: (most common)
- Profound hearing impairment at birth.
- Retinitis pigmentosa to adolescence.
- Usually balance problems.
- The hearing impairment does not appear totally at birth.
- Retinitis pigmentosa symptoms to adolescence.
- No balance problems.
- They are born without symptoms of visual or hearing problems.
- At adolescence symptoms appear.
- The hearing loss is progressive and the speech intelligibility is affected.
- The progress of retinitis pigmentosa use to be quicker than in Type II.