Yin deficiency and Yang deficiency can be judged by the symptoms. Yang deficiency is mainly manifested by fear of cold and cold limbs, while Yin deficiency is mainly manifested by five heart-heat (heat in the heart of the hands and feet, and self-consciousness of the heart and chest) and dryness of the mouth and throat. Yang deficiency is characterized by fear of cold, cold limbs, lack of thirst, or like to drink hot water, or spontaneous sweating (involuntary sweating during the day, aggravated by sweating with a little movement), urination and swelling, or urination, long and clear, face 晄white, thin stools, white slippery moss, pale, fat and tender tongue, and slow, feeble pulse. Yin deficiency is characterized by emaciation, flushing of the cheekbones, dry mouth and throat, heatiness, hot flashes and night sweating (abnormal sweating after going to sleep and stopping after waking up), dryness of stools, small amount of yellow urine, red tongue with little moss, little fluid, and a fine pulse (the pulse becomes narrower and finer and the rate accelerates), etc. If you feel unwell, it is recommended to go to the hospital as soon as possible. If you are not feeling well, it is recommended to go to the hospital as soon as possible and be treated by a professional doctor to avoid delaying your condition.