Yang deficiency   Yang deficiency indicates insufficiency of yang qi inside the body that fails to provide the functions of warmth, motivation and promotion. Symptoms or signs include aversion to cold, cold limbs, bland taste in the mouth, preference for hot drinks, pale complexion, spontaneous sweating, general swelling, profuse and clear urine or loose stool. The tongue is pale, bulky with a white slimy coating, and the pulse is deep and slow or thready on examination.		yang xu 陽虛   陽虛指身體陽氣虧損，機體失去溫煦，使推動、蒸騰、氣化等作用減退；所表現的虛寒証候(所謂陽虛生寒)。屬虛証、寒証範疇。臨床表現有：畏寒、四肢不溫、口淡不渴、或口渴喜熱飲、自發性出汗、小便清長、或尿少浮腫、大便稀爛、面色蒼白。舌色淡、舌體肥胖、舌苔白滑，脈沉遲(或細數)、無力。陽虛証多見於久病體弱者。