The common causes of zygomatic flushing in the elderly at night are yin deficiency and fire, kidney yin deficiency and heart yin deficiency. 1. Yin deficiency and fire: if the elderly sleep at night in addition to the performance of two zygomatic flushing, but also see the palms and hearts of the feet of the fever and dizziness, as well as red tongue and less moss and other symptoms, is often considered to be caused by the yin deficiency and fire. 2. Kidney yin deficiency: if the elderly sleep at night in addition to the performance of the two cheekbones flushing, can also be seen dizziness and tinnitus, as well as dizziness and tinnitus and soreness of the waist and knees and other symptoms, often considered to be caused by kidney yin deficiency. 3. Heart yin deficiency: if the elderly sleep at night in addition to the two zygomatic flushing, can also be seen in sleeplessness and night sweating (after going to sleep sweating abnormally, wake up sweating stops), as well as palpitations and panic attacks and other symptoms, is often considered to be caused by the heart yin deficiency. If you have any discomfort symptoms, you should go to the hospital as soon as possible, and the doctor will formulate individualized diagnosis and treatment plan according to your specific condition, so as not to delay your condition.