Which of the following is a symptom of diffusion hypoxia?

Diffusion hypoxia is a condition that can occur after the administration of nitrous oxide, especially when the gas is discontinued. The primary symptom associated with diffusion hypoxia is dizziness, which can result from a rapid decrease in the concentration of nitrous oxide in the bloodstream. This sudden change can lead to hypoxia, or a lack of sufficient oxygen in tissues. While headaches, stomach pain, and visual disturbances might occur in various circumstances or with different medical conditions, they are not specifically tied to diffusion hypoxia as prominently as dizziness is. Recognizing dizziness as a symptom is crucial for healthcare professionals, as it can help in identifying and managing the effects of nitrous oxide administration in dental and medical settings.