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Question: 1 / 550

What is the most common symptom of hypoxia?

Euphoria

Headache

The most common symptom of hypoxia is headache. When the body experiences a deficiency in the amount of oxygen reaching the tissues, it can trigger various physiological responses. A headache can result from increased intracranial pressure or changes in oxygenation levels in the brain, making it a prevalent indicator of hypoxia.

While euphoria and increased confidence can occur at high altitudes due to the body's altered state, these symptoms can be misleading and may lead an individual to underestimate the seriousness of the hypoxic condition. Loss of consciousness is a severe symptom typically associated with advanced stages of hypoxia and is not the earliest signal. Recognizing a headache as a symptom allows pilots and individuals in high-altitude environments to take preventative measures before the situation escalates.

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Increased confidence

Loss of consciousness

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