少阴寒化证(cold transformation syndrome of Shaoyin、Shaoyin disease with cold transformation syndrome)为证候名。指少阴心肾阳衰,阴寒内盛,以无热恶寒,精神萎靡,但欲寐,四肢逆冷,下利清谷,脉微细或沉微欲绝为常见症的少阴病证。