I was recently diagnosed with small fiber neuropathy at age 24. Cause unknown. I have a lot of pain throughout my body and horrible fatigue and weakness. I have suffered with anxiety depression and panic disorder which my doctors say is magnifying my symptoms and I need to get that under control. Started me on Cymbalta 20 mg and by day 5 I was awake all night with a racing heart, jerking when I tried to fall asleep, sleeplessness and chills/shivers. Doctor told me to get off of it but is stumped as to what else he can prescribe. I’ve tried other antidepressants in the past and the side effects were too much for me. My question is: are these normal side effects and do they go away??