Heart qì vacuity, heart yáng vacuity, heart blood vacuity, or heart yīn vacuity; characterized by heart palpitation or fearful throbbing, insomnia, and dizziness. Heart qì vacuity is characterized by general qì vacuity signs such as fatigue, shortness of breath, spontaneous sweating, a pale enlarged tongue, and heart-specific qì vacuity signs such as interrupted pulses (结代 jié dài), and pain in the heart itself. Heart yáng vacuity is the same as heart qì vacuity, but is differentiated by the addition of pronounced cold signs such as somber-white complexion and blue lips, reversal cold of the limbs, and, in severe cases, vacuity desertion signs such as clouded spirit, fine pulse on the verge of expiration, and great sweating. Heart blood vacuity is characterized by general blood vacuity signs such as pale lusterless complexion, pale tongue, and fine pulse, together with general heart vacuity signs.