Chronic subjective dizziness is characterized by persistent, nonspecific dizziness. Patients may exhibit persistent, nonrotational dizziness, which usually lasts for a long time, possibly more than three months. Patients present with dizziness, head heavy, and light-headedness, or patients often feel like they are floating without roots under their feet when walking, and there are usually no positive problems with instrumental examinations, such as transcranial Doppler or cranial imaging, and vestibular aspects. Patients with chronic subjective dizziness may have some anxiety or depression, and after poor sleep or emotional stress stimulation, patients may feel more dizzy and lightheaded, which is clearly different from vestibular vertigo.