When Calgarian Melissa Lawson-Larsen lost all feeling in her face from the nose down, she thought she was having a stroke. So she headed to the emergency room. Once inside, Larsen disclosed that, like a growing number of Canadians suffering from multiple sclerosis, she had travelled abroad a few months earlier for a procedure known as the liberation treatment - angioplasty preformed on the veins of the neck that, though still unproven, seems to have eased the MS symptoms of some patients.