Yes muscle spasms can be very painful I get them in my legs and my hands occasionally and all these are very uncomfortable I have to rub very gently then put cream a patches on them I find that certain foods and drinks trigger them mine are Cokes lemon sweet tea and sometimes it's how long or how I sit and how I get up. Having scoliosis degenerative disc and arthritis doesn't help. I have done physical therapy for my back but haven't found anyone to help with muscle spasms. My Ortho Dr gave me a pain shot but my body doesn't deal well with those , they make me sick for days. I'm looking for a Dr that can help.