These spasms only last seconds and are quite violent. They occur every 40-50 seconds. They only begin once I am fully relaxed.
Once I manage to fall asleep they stop. The spasms are now occurring in my shoulders and neck - my head turns 45 degrees. It's very painful, and the next morning I feel stiff and sore. These are occurring every night. What is it?"
Of course, without a complete medical exam and a sleep study (which SharonJo reports she is booked for in May,) it's not possible to give a definitive answer.
However, three possibilities do come to mind, given these symptoms: Myoclonus, restless legs syndrome and periodic limb movement disorder.
