I'm on day 2 of citalopram and having some weird sensations I have never had before. I feel very nauseated and don't have an appetite, which I was warned about so not too worried. I cannot sleep, wake up a lot throughout the night and have extreme restless legs. I've gotten 4-5 hours sleep per night. Again, was warned about this so not too concerned. The weirdest thing is that I had a panic attack in the middle of the night and it felt like fire was surging through my nerves, all down my body, then it turned icy feeling. It went away after the panic attack ended but I'm still getting some of the hot feeling throughout my body today. Am I crazy? It feels so weird.