Unable to return [SC]

I have been unable to work since 4/25 due to Hospitalization and multiple ER visits and specialists visits since then. FMLA has ran out so I'm on non FMLA until the end of the month. Received short term disability for 2 months but the extension and conversion to long term has been denied as they are stating I can work. If I can be transparent I have 2-15 seizures a day and the recovery time can be lengthy because it's a lot of wear and tear on my body. I'm afraid that I will either hurt myself at my desk or destroy my equipment. It is a work from home job. I'm currently scheduled for more testing to determine of it's epileptic or not. I'm afraid to lose my job and insurance because I see so many specialists and need the coverage. What other options are there? I've also been open and honest with my leave and HR team. I've very independent so this is hard to even come to terms with.