Painful muscle spasms.
Hi Leslie, welcome 
Many of us experience muscle spasms 
Sometimes they can be relieved by medication, or a Neurophysiotherapist may be able to advise specific exercises to alleviate the pain and release the tension 
There’s lots of info about ataxia on www.ataxia.org including helpful Fact Sheets, there’s a Fact Sheet relating to Medications if you’re interested 
xB
I get bad leg cramps. Every night a Dr prescribed baclofen. It helps a little but I prefer not to use drugs on individual symptoms. Hope this helped