Re: Fibromyalgia and your SSDI award
I have not heard this; the only things I'm aware of are that assets determine eligibility for SSI (monthly assistance provided during the SSDI process and paid back after a favorable decision once your benefits begin and any back pay awarded) and after the fact SSDI awarded, assets determine the amount you pay for Medicare Part B. Also if say you have no income and no health insurance during the length of the SSDI determination process, assets determine whether you were eligible for state funded programs such as Medicaid, Food Stamps, etc.
Without saying there is the IRS to deal with (annually); seek a good tax attorney or financial planner once your benefits start.
There may be other things I am not aware of; these were just the things I encountered.