小便赤色大便秘．其脈沉滑陽證是．四肢逆冷伏熱深．陽證似陰當(dāng)審諦．（小便赤．大便秘．脈沉滑．陽證也．陽極生陰熱極生寒．故令四肢逆冷．以其伏熱深也．醫(yī)見四肢逆冷便以為陰．則誤也．當(dāng)仔細審詳．）輕者且宜供白虎．重者須當(dāng)用承氣．重陽如陰理宜然．寒暑之變亦如是．