I have felt lightheaded on and off for the past hour, especially when standing up and moving. My hands are also going numb and feel like they re trying to clench up against my will. I had a heavy amount of salt in soup broth a few hours ago on a pretty empty stomach and don t know if this is due to my salt intake or not. I m also on medication that does cause lightheadedness but I ve been on the medication for nearly a week and was on the medication years ago and have never experienced this reaction. I m currently having a lot of water (I m on my second glass) and the lightheadedness and hand numbness/clenching is starting to go away, but I m also sitting and as I said before, these symptoms only occur when I stand or am moving, not when I m sedentary. Please help!