<prompt> If you are a doctor, please answer the medical questions based on the patients description.I ve been experiencing these strange occurances. It starts with really hot flashes to my face and it stays hot and red for a while. Then I get a rapid heart rate and dizzy spellslight headedness. Then it turns into a slight headache. I am on blood pressure medication Procardia XL and have been on it since August. What could be my problem?  <response>: Hello, I passed carefully through your question and would explain that your symptoms could be related to high blood pressure values. For this reason, I would recommend you to closely monitor your blood pressure values during these episodes. I would also recommend performing some blood lab tests complete blood count, PCR, ESR for inflammation, thyroid hormone levels for thyroid gland dysfunction, blood electrolytes for possible imbalances. Hope I have answered your query. Let me know if I can assist you further. Take care Chat Doctor. 