Hi and welcome,
It is very true that motor vehicle accidents have nothing to do with MS, hitting your head will potentially cause a traumatic brain injury but MS is an autoimmune condition that causes demyelinating brain and or spinal cord lesions, completely different causes and type of neurological damage.
I'm honestly confused at how "puking blood" could of had anything to do with MS, it's not a symptom associated with MS but if it lead to you having brain and or spinal MRI's and being diagnosed with MS, it may be a fortuitous coincidence, as in experiencing something your doctors simply couldn't ignore anymore as mental health related.
I would suggest you seriously consider looking through your MS related test evidence, neurological assessments, visual evoked potentials etc and researching MS society articles eg history of MS, your symptoms etc so that you can fully understand the chronic medical condition you have and be the best advocate for your future health....
Hope that helps.......JJ
Vertigo and or vestibule dysfunction can definitely cause vomiting, bruising, falls, head injuries etc, vomiting blood is extreme but not unheard of with vertigo. We've actually had a few other MSers over the years who've experienced prolonged periods of comorbid issues because of how bad their vertigo episodes at times get...
"Progressive-relapsing MS (PRMS) is the rarest of the MS disease courses, only affecting about 5% of people diagnosed with MS. It is similar to primary-progressive MS (PPMS) because both types of MS are steadily progressive from disease onset. With PPMS, there is steadily worsening of neurologic function from the very beginning, although the rate of progression may vary over time with the patient experiencing occasional plateaus or minor temporary improvements. PRMS also has a steady worsening of neurologic function (disease progression) from the beginning, but with occasional relapses (attacks)
Because MS tends to progress at differing rates and with fluctuating symptoms within each patient, it may not be clear at the beginning of disease onset that a patient has PRMS. A physician may initially diagnose a patient with PPMS until a relapse or exacerbation occurs, then change the diagnosis to PRMS."
Unfortunately disease modifying treatments are primarily unsuccessful for the progressive types of MS, and are not generally prescribed, there are changes coming because in the last year or so they have been developing and researching various disease modifying drugs specifically for the progressive types.
Secondary Progressive MS (SPMS) is the only progressive type that is associated with Relapsing Remitting MS (RRMS), RRMS-ers can still transgress to SPMS after a decade(s) of having RRMS but it can take a few years before SPMS becomes more clear......both Primary Progressive MS (PPMS) and Primary Relapsing (PRMS) are the least common types, they are both progressive from the start, both are less understood and harder to diagnose etc
I would strongly suggest you contact your local MS society, they have a lot of services and support to offer you, you may wish to also consider getting a second opinion on your diagnosis of PRMS with an MS specialising neurologist and get advice on what treatment options are available and or in your best interest....
Hope that helps........JJ