You may have kidney yin deficiency, dizziness, and poor memory because of yin deficiency, and yin and blood are homologous, so if blood does not nourish the brain, you will have symptoms of dizziness and memory loss. There are many symptoms that cause kidney yin deficiency, but you should see if your symptoms are correct. Now let me introduce you: Yin deficiency produces internal heat, so you will have symptoms of five upset and heat, as well as soreness in the waist and knees, dizziness and tinnitus, insomnia and dreaminess, and it is easy for men to be yang-strong. Body weight loss, hot flashes, night sweats, etc., it is not difficult to distinguish that drugs for nourishing yin and tonifying kidney are used for treatment. Most of these drugs are sweet and cold drugs, such as Dendrobium, Polygonatum odoratum, Cornus officinalis, Lycium barbarum, American ginseng, etc., and Chinese patent medicines mostly use Liuwei Dihuang Pills. Another may be caused by cervical spondylosis. Because the cervical vertebra compresses the cerebral vessels and causes insufficient blood supply to the brain, it often leads to dizziness, poor memory, unclear mind, poor sleep and unreliable sleep. The eyes are a little dry, so if it weren't for kidney yin deficiency, you can take an X-ray of cervical vertebra to know. If you treat it, you can use some drugs to nourish nerves and drink some soup. If you are a Chinese patent medicine, you can take some Xuefu Zhuyu capsules to promote blood circulation and remove blood stasis.