Final answer:
The symptoms described are consistent with hyperventilation, which can occur in panic attacks. Therefore, the most likely cause of the symptoms is a panic attack.
Step-by-step explanation:
The symptoms described, including blurred vision and numbness around the mouth, are consistent with hyperventilation.
Hyperventilation can occur in panic attacks, episodes of severe pain, asthma attacks, and other situations. When a person hyperventilates, they breathe out excess carbon dioxide, leading to a drop in blood levels of carbon dioxide. This can cause the blood to become more alkaline and result in symptoms such as blurred vision and numbness.
In this case, the most likely cause of the symptoms is a panic attack.