Will the severity of a condition determine if you can get approved for disability ?

In my last post, I mentioned an online discussion that I took part in. One of the participants in the discussion was from England and one of his questions about the U.S. disability system was this: "Surely the help that people are entitled to depends on the severity of the condition?"And the answer to the question is Yes. In the U.S. disability system (the social security disability and SSI