I think maybe parent carer is being a little bit more than a parent, for a child with special needs or a disability, where there may be more work/care needed than usual. At the moment my little boy is needing "physio" exercises each day, portage, speech and language help, so maybe I fit into this category.
Support is usually "free" at least not much cost involved. A lot of people benefit from support groups and the help of others in a similar position, but if you do not feel that you want any support - just say so.
I do think sometimes the "professionals" can be very irritating. But the help is there but only if you want or need it.