Are you lightheaded?
你觉得头晕目眩吗？

I received a call from an anxious woman. “I'm diabetic and I'm afraid I've had too much sugar today,” she said. “Are you lightheaded?” I asked. “No, I'm a brunette.”

我接到一个焦虑的女人打来的电话。她说：“我是糖尿病患者。我担心今天吃进去太多糖了。”我问：“你是头晕目眩吗？”“不是。我是深色头发。”（把lightheaded当作是问头发颜色。）