While grants for profit oriented businesses are scarce. There are some
resources that you might be able to use. I would browse the
http://www.mda.org/ website. They seem to have some resources that you may be
able to use.

I do not know how advanced your MS is, but there might be some opportunities
for you to do sales or customer service from home. Also take into
consideration that a lot of these “work at home” jobs or opportunities
are not very legitimate, and need to be researched. Anything that requires
money up front needs to be looked at suspiciously.

While you are working on getting in touch with the MD association or a local
support group that they might have directed you too, it might be a good idea
to narrow the idea of a home business, to exactly what you would like to do.
I would sit down and try to figure out what I am good at, and how I can turn
that into a home based business. Come up with a couple of ideas to bounce off
other people.

Unfortunately, there are very few grants available to start a for-profit
business. You may want to visit with a counselor at a small business
development center, women's business center or SCORE office in your area.
Their services are free and they can help you assess your plan and provide
direction. They will know about any loans for which you might qualify.