The x-chromosome linked mental retardations form a heterogeneous group of more than 200 rare diseases whose common points are :
- A mental deficiency of varying degrees
- A hereditary particularity presenting a risk of several people affected within the same family, mainly men.
These disabilities are expressed in different ways and at different levels :
Speech difficulties, behavioural disorders and praxis,
Educational and socio-behavioural difficulties,
Attention span deficiencies…
So many symptoms that require adapted rehabilitation programmes
And which may trigger other difficulities : epilepsy, hypotonia, hyper-laxity...
... Requiring a specific medical reimbursement