The limitation on a person's physical functioning can be very hard to live with.
Really? How do you mean?
Because physical disabilities such as impairments limit facets of daily living :(
Ok. That is true
In many cases it can be caused by alcoholism like in the case of Prenatal disabilities that are acquired before birth 
So can alcoholism cause disability? 
Yes due to prolonged lack of oxygen or obstruction of the respiratory tract
Oh really? That is a bad situation to be in
Yup its very careless of the parents if they do that. But it may also be caused due to genetic disorders or accidents.
Such parents are very careless