I recently had to change from Cymbalta to pristiq because of horrible diarrhea from Cymbalta that made me lose 4.5kg in three weeks. I’ve been taking the Pristiq for 4 days now and the effect on my mood and energy levels is great. I can hardly believe it’s working so fast and it feels amazing to have some drive again and not feel so empty. BUT. Now the skin on my back hurts. It feels like one big bruise. I get this symptom when I have a high fever, which I don’t have right now. The only new thing right now is the Pristiq. Has anyone experienced this? Did it pass?