I've had anxiety issues for more than 10 years now and have been on Buspar and was switched to Lexapro a couple of years ago and the dosage was increased to 20mg earlier this year. I haven't really experienced any problems associated with the medication that I'm aware of, but in the last month I've had terrible issues with my back (first a sprain in the lower left side and then in the last two weeks, my degenerative disc in my neck has been troubling me again after two painfree years, due to steroid injections two years ago). At the moment, I'm waiting to be scheduled in for another injection into these nerves next week. I've been taking Lexapro, Methocarbomol, Ethodolac (Genertic Anti-inflammatory), Allegra D and Tylenol PM. In the last week, I've been experiencing these strange and unusual brain shivers, like a little tremor in my head more frequently than ever before. I have had a couple of these in the past when I missed my anxiety medication, but I haven't missed any doses and the increased frequency of these little "shivers/tremors/sparks" are beginning to trouble me. I don't want to worry over nothing, but I also don't want to minimalize something that might be a different issue (maybe brought on by my neck pain or the medication I'm taking). I've taken all of these medications for several years (have severe sciatica in left side since I was 18). So I don't think it's medication related. Any thoughts? Am I worrying over nothing... Is this normal?