<s>[INST] Last night I woke up to use the bathroom. I got cold sweats and fainted. After my daughter helped me up and left I fainted again. I hit my head and left side of my body pretty hard on the tile. I now have a burning feeling on the side of my head and arm. Do I have Anything to worry about. [/INST] Hi, I am Dr.Bruno.  I have read your question with care and understand your concerns. Let me try to help you Question : What causes sudden episode of cold sweat and fainting?Answer : Low Blood Circulation can cause sudden episode of cold sweat and fainting Question : Do I have Anything to worry about.Answer : Yes. Please consult your cardiologist immediately. Low Blood Circulation is an emergency Hope you found the answer helpful.If you need any clarification / have doubts / have additional questions / have follow up questions, then please do not hesitate in asking again. I will be happy to answer your questions.Let me know if I can assist you further.Take care. </s>