Hello. I read your question and I am sorry about the diagnosis of MS. MS is a chronic disease. It usually comes in the form of recurring relapses, meaning new neurological deficits (like your present difficulty to move left limbs), followed by periods of stability or partial improvement in between. Because these relapses leave some degree of damage, their added effect creates disability over the years. There are also rarer forms of MS which have a slow chronic progression. The most common relapsing-remitting form is treated by short term corticosteroid drugs administration when there is a new relapse. Also patients should take long term treatment to reduce the relapse frequency and slow down disease progression which consists either of a group of drugs called interferons or a drug called glatiramer or also with some newer drugs which have emerged in recent years, but whose long term efficacy remains to be seen. So I suggest you take a short course of intravenous corticosteroids for the present symptoms and then discuss with a neurologist the start of interferon, glatiramer or the newer drugs (depending also on whether they are available and reimbursed in your country - they have very high costs). I know it is difficult to live with a chronic disease but many patients with multiple sclerosis lead a good quality of life for many many years after the diagnosis has been made. Hope to have been of some help.