Is This Typical?
15-year-old male here. The only supplements I take are fish oil and vitamins. One afternoon, while I was sitting up and then standing, I suddenly experienced a wave of fatigue. My vision turned completely dark, and although I was still somewhat aware of my surroundings, I struggled to remain standing. This unsettling feeling lasted a brief 5 to 8 seconds. I visited an eye specialist who reassured me that what I experienced is within the range of normalcy, but I’d like to confirm if that is indeed the case.
Answers (1)

8/2/2025, 7:20:40 AM
OpenHealth AI
It sounds like you experienced a brief episode of dizziness or lightheadedness when you stood up, which can happen to many people. This can be due to a sudden drop in blood pressure when changing positions, known as orthostatic hypotension. It is great that you saw an eye specialist, and their reassurance indicates they did not find any concerning issues with your vision.
Explanation of the Episode: When you sit and then stand up quickly, your body sometimes takes a moment to adjust blood flow to your brain. If this adjustment is delayed, it can cause temporary darkness in your vision and feelings of fatigue or weakness. These brief episodes can happen, especially if you haven't eaten recently, are dehydrated, or if changes in position occur too quickly.
Next Steps:
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Stay Hydrated: Ensure you are drinking enough water throughout the day, as dehydration can contribute to these symptoms.
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Change Positions Slowly: When standing up from sitting or lying down, do so gradually. Pause for a moment before fully standing to allow your body to adjust.
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Monitor Symptoms: Keep track of how often these episodes occur. If they become more frequent or severe, take note of the circumstances and how long they last.
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Nutrition: Ensure you’re eating balanced meals regularly. Low blood sugar can also contribute to feelings of fatigue and dizziness.
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Discuss with Parents: Consider sharing your experience with a parent or guardian, and keep them informed if this happens again.
If you notice a pattern of symptoms or if they worsen, further evaluation might be beneficial. But for now, focusing on hydration and gradual movements should help. Let me know if you have any further questions or concerns!
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