Have you ever just been sore for no reason?The 23-year-old MS patient describes some of the disease’s invisible symptoms.
![Hayley, 23, has MS and sometimes struggles to speak, leading some to assume she's drunk too much alcohol [Al Jazeera]](/wp-content/uploads/2013/12/2013102072143259734_20.jpeg?resize=270%2C180&quality=80)
