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There could be several things
There could be several things going on, and most likely, this is related to your eating disorder. You should see a doctor about these symptoms. The dizziness could be caused by low blood pressure and/or electrolyte imbalances, which can be very dangerous. The hot/cold variation sounds a bit like a blood sugar issue, but only your doctor can diagnose the problem. NOTHING is normal when you have an eating disorder, please remember that. The physical symptoms that you are experiencing are telling you that your body is under stress and you need treatment. I hope you are able to find the help you need.
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