Feeling dizzy and wanting to fall down may be due to a variety of factors, commonly associated with low blood sugar, cerebrovascular disease, Meniere’s disease, heart disease and so on. 1. Hypoglycemia: dizziness can be caused by hypoglycemia, which is mostly related to improper diet and malnutrition, and may be accompanied by symptoms such as blurred consciousness. 2. Cerebrovascular diseases: Cerebrovascular diseases such as cerebral arteriosclerosis, cerebral stenosis, cerebral thrombosis, etc., will lead to obstruction of blood circulation in the brain, which will lead to dizziness and feeling of fainting, and may be accompanied by symptoms such as elevated blood pressure and chest tightness. 3. Ménière’s disease: Ménière’s disease is a kind of auricular vertigo disease, the symptoms usually manifested as episodes of dizziness and the phenomenon of falling down immediately, which may also be accompanied by nausea, vomiting and other uncomfortable symptoms. 4. Heart disease: such as cardiac arrhythmia, myocardial ischemia, infarction, hemodynamic changes caused by insufficient cerebral perfusion, resulting in dizziness, the phenomenon of falling, and in severe cases lead to fainting. Feeling dizzy to fall down may be related to a number of reasons, such as symptoms are serious or frequent, you should go to the hospital in a timely manner to improve the relevant examination, to clarify the cause of the disease, targeted treatment.