Addison's disease

I am currently on long term disability and suffer from both epilepsy and Addison's disease. When I started disability, I had a complex partial seizure about every other day. I have slowly had my seizures improved, and they may no longer be frequent enough to qualify for disability if my case is reevaluated. But my Addison's disease has slowly progressed to now cause frequent extreme fatigue, which my endocrinologist indicated cannot be eliminated. When disability started, I only rarely had Addison's fatigue. Will it be difficult to prove how disabling the Addison's disease now is ?