RHEUMATOLOGY RESPONSE TO LEGAL PROFESSIONAL
Assuming your client has no co-morbid conditions further exacerbating his weakness, it is possible for someone with polymyositis, in the absence of appropriate and effective treatment, to develop severely debilitating weakness to the point of near-paralysis. This deterioration would not be permanent, as effective therapies target the inflammation that characterizes the disease and causes the patient's weakness. It is uncommon for such an outcome (near-paralysis), having effective treatments, such as first-line corticosteroids and, if necessary, immunosuppressants. The strategy for treatment is to start a patient on a corticosteroid (i.e. prednisone) for 4-6 months initially. If at that point, the patient has significantly improved, the corticosteroid dose is tapered over the next couple of months, as tolerated, to a maintenance dose level to keep the patient's condition stable. However, if the patient's condition is not significantly improved or even worsened, then an immunosuppressant (i.e. cyclophosphamide) is added. The route and amount of immunosuppressant is variable (oral therapy or intermittent IV therapy can be used) and the required duration indefinite. It is difficult to answer whether the client in your scenario (who was previously nearly paralyzed) would be able to walk again. The prognosis of polymyositis is very good with current therapies. Nevertheless, the patients who do NOT respond to current therapies (mentioned above) often deteriorate and develop respiratory insufficiency (respiratory muscles are involved) and subsequently die. Therefore, unless a patient who previously did not receive appropriate prior management (or did not receive management at all) received a new medication to which he responded, it would be highly unlikely for a previously appropriately managed patient to improve spontaneously, again, in the absence of another medical condition. Finally, if a patient were to improve after being severely debilitated, it would indeed be possible to require a wheelchair in the future if the patient stopped the effective medications or the medication's effect ceased. I should note that it is possible to develop tolerance to these medications, especially corticosteroids. However, in this setting, one would see common toxicities associated with these medications, such as central (around the waist) obesity, ruddy cheeks, easy bruising, weak bones and subsequent fractures, increased susceptibility to infections, etc. If you need any clarification or additional information, please feel free to contact me.