<s>[INST] hello doctors thank you for your help i have an answer: sometimes i feel that my health temperature become high suddenly in my legs then i feel that my heart is beating so fast and i feel that i can not breath normaly this comes for me time to time. pleas answer me . thank you so much [/INST] Hello, I understand your concern and would explain that your symptoms could be related to anxiety or a panic attack.  But, before coming to this conclusion, I would recommend performing some tests: - a resting ECG-complete blood count, PCR, ESR for inflammation- thyroid hormone levels for thyroid gland dysfunction.  If all these tests result normal, you should consider anxiety as the main cause of your complaints. Hope I have answered your query. Let me know if I can assist you further.  </s>