Regardless of the above answers I am sorry to tell you that unless you were receiving DLA before a certain date then it is not an exportable allowance, neither is attendance allowance or carers allowance.
See here
http://www.acespana.org/acespana/info_574.htm
If you come to Spain (which is where I am and can only speak for here) the medical system locally is good, ie you will be able to sign on at a doctors and receive prescription medicines at less than the UK prices but unless you are of pensionable age or have Private Health Insurance any hospital visits will have to be funded from your own pocket.
If you have paid national insurance contributions in the UK for 18 months before you go abroad you will need to get an E109 to register for 2 years reciprocal healthcare in an EU country, after that you are on your own.
An E111 is designed for holiday use and not as permanent expatriate health cover.
There is plenty of info out there on the internet and the people at the International Pension Centre will put you right, give them a ring.