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The drug Tysabri is used to treat Multiple Sclerosis, a devastating disease of the central nervous system. Tragically, however, it has been linked to a relatively rare condition known as Progressive Multifocal Leukoencephalopathy, or PML, which affects patients with immune systems compromised by drugs used to treat kidney transplants, AIDS, and leukemia. PML is caused by the human polyomavirus, known as the JC virus, which destroys the sheath of fat that insulates the nerves in the brain.
The symptoms of PML include vision loss, paralysis, mental deterioration, muscle problems, and the loss of speech, and it can prove deadly within one to four months after the appearance of initial symptoms. When Tysabri is taken in conjunction with other medications used to treat MS such as Avonex, the risk for PML is even more pronounced. Tysabri actually had to be removed from the market after it was connected to one death and a potential PML case.
After the onset of these initial symptoms, the condition of a PML patient continues to deteriorate and extensive brain damage can result. Tragically, the condition is known to affect a number of different areas of the brain simultaneously, and destroys the white part of the brain in particular. Sadly, the entire brain can slowly deteriorate into a collection of unorganized cells and can fail to function properly, if at all.
If you are one of the people suffering from the profound heartbreak of PML due to your Tysabri usage, or if you have lost a friend or loved one to such a horrific disease because of this drug, don’t suffer in silence any longer. Drug makers have a duty to protect consumers and to warn them of devastating consequences in a timely manner, and you may be entitled to financial compensation for this gross negligence. Make sure that you speak with a compassionate and understanding defective drug attorney today.