It's how your health problems affect you that matters, not the diagnosis.
Otherwise people with rare or hard to diagnose conditions would not get it. Excellent advice copepod.
Never attempt a DWP form without the help of someone from an independent agency who knows how to word them, the CAB are, indeed, marvelous. As are Age Concern and Welfare Rights in my area.
And I'd never let someone from a statutory agency (health or social services) fill in a DLA form either, however fancy their official title. They don't know how to word the forms. They are, however, fab at providing additional evidence.