Hello there, First off welcome, glad you found us, but sorry its all so confusing! Hopefully you will start to understand things more soon, and then your daughter can start feeling better Drinking the 2-4 liters a day while feeling ill is really tough, especially when you are overly nauseated. For me I really just have to force myself to, and teach my mind to not let me be nauseated, though it sounds imposible, it does work for me. Between biofeedback type techniques to just plain persuasion in my head, I am able to not throw up, and stomach the nasty 2-4 liters of gatorade that I drink a day. Its really hard, but for me the only way that I am able to function during the day is if I get my liquids and salt, so ultimately its just a matter of forcing myself to do things. I am also a POTS teen, so if your daughter needs or wants someone to talk to, feel free to message me, and you can have my e-mail or maybe she can set up an account if you and her wish too. I also know of a site for kids and teen with dysautonomia, if you are interested. In regards to pots switching on and off, I have never heard of that. It is usually more gradual of a healing process, and hopefully eventually she will grow out of it, but unfortunately, my guess is that she is just having a good day or two here, and will be back to her "normal" sick self soon. I hope I am wrong though! That would be wonderful you you and her I hope you both are doing well! Feel free to message me if you want to. -Mary