Hi there, thanks for asking. It (feeling warm, dizziness
, sweating more than normal amount) could be due to dis-regulation of the sympathetic parasympathetic system in your body. It could be a sign that your heart and circulatory system is trying to work well (but may have some irregular heart beat, etc) or your breathing at night have some problem, etc. It is necessary to tell your doctor about it. He may ask for EKG to see if there is any issue with your heart function. It all the issues mentioned are ruled out, your doctor may reach to the conclusion that anxiety
could be the reason. However, he can manage it after a full assessment. I wish you the best health.