Dizziness, nausea and weakness of the feet may have the following causes: 1. If the patient is starving, it should be considered a hypoglycemic reaction. If the patient is usually weak, it may be a manifestation of hypotension, so pay attention to the measurement of blood sugar and blood pressure to clarify. 2. Patients with dizziness, nausea and weak feet may also be caused by lack of sleep, staying up late or overexertion, and it is recommended that patients should ensure sufficient rest, and the symptoms can be reduced. 3. Patients with dizziness, nausea and weak feet may also be caused by vertigo disease attacks, such as because of vertebrobasilar artery 4. Consider vestibular diseases, such as Meniere’s disease and vestibular neuronitis, which can cause patients to experience severe dizziness, nausea, and spontaneous foot weakness.