How to judge yin deficiency and yang deficiency, dizziness will be aggravated on cloudy days and alleviated on sunny days.

This disease may not be yin deficiency or yang deficiency. According to the description, it may be that the body is blocked by moisture, which blinds the mind and leads to dizziness.

Suggestion:

Therefore, when it rains, the weather is wet and the dizziness is aggravated. On sunny days, there is less humidity and dizziness.