I've treated several clients with MS. It really helps their circulation and numbness or tingling. They tend to suffer from really bad constipation too, which can also help. I tend to use moderate to light pressure, rather than a deeply stimulating pressure. Concentrating on the nervous system, bladder (can have problems there too) and digestive systems. Lots of relaxing massage as well is good and they really deserve a bit of pampering too!!!
Its a condition of 'negative' energy and you need to make sure you dont give of your own energy too much as I was completely drained after my first client, but then learnt to channel rather than give energy.