I am having shoulder pain for over 2 years now, which has been attributed to fibromyalgia. There is occasional numbness in my left elbow. I initially took pregabalin daily, which gave me side effects that I want to avoid. I am now on Pregaba MSR 75 mg taken once in 4 days which seems to keep the numbness in elbow at bay. Someone say that taking pregabalin once in 3-4 days like that can lead to serious effects like fits. Is that true? Can I take Prehaba MSR 75 mg once in 3 or 4 days (primarily to help control numbness)