multiple sclerosis
"Avonex stopped working for my mom around 2006, and her quality of life was quickly deteriorating. She was using a walker and her neurologist suggested Tysabri. After discussing the severe and rare side effects, such as Progressive Multifocal Leukoencephalopathy (PML), she and my stepfather decided to go for it. She took Tysabri for just over 4 years before we started noticing signs of decline in speech and motor function. In January 2011, it was confirmed she had PML. The doctors told us she had 3 weeks to 3 months, but we had her for 8 months (and one more birthday) before she passed away in October 2011 at the age of 53. Tysabri gave her a better quality of life for longer than she could have hoped without it."