Yin deficiency

Deficiency of heart yin refers to deficiency of yin fluid, insufficiency of heart and mind, internal disturbance of deficient heat, and symptoms of deficient heat characterized by upset, palpitations, insomnia, and yin deficiency symptoms. Heart yin deficiency syndrome is one of the common clinical deficiency syndromes. Mostly due to emotional internal injuries, Wuzhihuahuo, burning the heart and yin; or excessive fatigue, heart yin exhaustion; or fever injury, yin loss;