An ‘invisible disability’ is defined as a disability that is
not quickly apparent; there are no outward or obvious signs of a disability. Of
course, this does not mean that the disability is not there, it just changes
others’ perception and treatment of the people with the disability. With
disabilities that are clearly visibly, people have a tendency to default to
over-bearing pity in an attempt to be helpful, the opposite is true for people
with invisible disabilities as there can be a refusal to believe that the
disability exists.
