What Causes Painful Muscular Spasms In Neck?

1 yr ago I my neck locked up on me and I had to visit urgent care to get relief. I get discomfort every couple months and get massage to release any tension. 1 week ago I started having more muscle spasms and It's continuous. I don't even have to move my neck anymore and I get a spasm. I have no numbness or tingling in my arm. Should I be concerned and have any tests done?