If a patient does not have high blood pressure but has dizziness, the following diseases should be considered: 1. diseases, such as limited labyrinthitis, vestibular neuritis, vertigo, otoliths, all of these conditions can lead to vertigo; 4, cardiovascular diseases, such as bradycardia, heart failure, all of these conditions can also cause vertigo without high blood pressure; 5, for common blood diseases, such as anemia, thrombocytopenia caused by various factors, all of these conditions can lead to patients with low blood pressure, but vertigo.