### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
was riding an escalator and got light headed as I stepped off. Th and lost councisnous. my heart was racing when I realized I was on the ground. realized that I had not eaten today ... feel better now, not sure if I should worry about it. The on-site medic took my blood sugar levels which were good, my pupils were not dialated and I was alert. The whole thing passed within 10 minutes. This has never happened before. I have no heart conditions.

### output:

Hi, welcome to our site. I am Chat Doctor, MD. Read your query. That is a very significant question and I appreciate your problem. I will try my best to answer your queryThis is probably a syncopal attack. Lack of food and fluids are often common causes of the syncopal attack. There is a sudden fall in the blood pressure. This causes the vertigo and thereafter fall. As one regains consciousness the heart rate is increased and blood pressure gradually picks up. I would suggest making sure your fluid and food intake is normal and good. I however would suggest CBC and ft test along with electrolytes. I hope this helps you. Inform the reports mentioned above/if any other, so I can be of help further. I have given you the answer to the maximum considering the information provided. The results of the tests could further enhance my answer to you. You can upload them on the site. You can upload them with the query, or if you have a problem, send them to attachments@ChatDoctor .com with Sub: ATTN Your Name. Once we receive the photos or diagnostic reports, my team will send reports / pictures to me. Please do understand that some details could be extracted from a detailed history and examination. Please click on Thanks/Helpful if found useful. Please feel free to ask another query. I would be glad to help you. Looking forward to your return query with the details asked so that I can help you further. (If the answer has helped you, please indicate this)Best of luck. Chat Doctor. MBBS, MD (Internal Medicine), CC (Diabetes Mellitus), DNB (Neurology)