螈为引缩 为伸.热极风生并在经.涤热祛风犹可望.防风通圣散能平.筋急而缩为螈.筋缓而伸为 .伸缩不已.为螈 .俗谓之搐搦是也.此皆热极生风.风主动.故螈 .宜以防风通圣散治之.以涤热而祛风也.