《伤寒论·平脉法》
脉象浮而大，浮是感受风邪，大是邪气盛。风邪与正气相互搏结，轻的邪犯肌表而出现皮肤出疹，身体搔痒、名叫泄风；重的风邪久羁不去，皮肤溃烂结痂，而形成痂癞。
脉浮而大，浮为风虚，大为气强，风气相搏，必成隐疹，身体为痒。痒者名泄风，久久为痂癞。
Floating and large pulse, floating indicates Wind invasion, large indicates strong Qi. Wind invasion and Righteous Qi entangle each other, mild Wind invasion affects the body's exterior and manifests as skin rashes, itching, which is called "Xie Feng" (Wind leakage); severe Wind invasion stays for a long time, causing skin ulceration and scab formation, which is called "Jia Lai" (scab leprosy).