There are many reasons why patients get dizzy, nauseous and want to vomit when they get up from sleep: 1. If the patient appears under the condition of turning over and changing the specific position of the head, it is considered to be caused by otoliths. The duration of the patient’s dizziness, nausea, and desire to vomit is relatively short, usually relieved in about a minute, and the patient’s eyes can be seen to show rotational tremor. 2. The patient’s dizziness, nausea, and desire to vomit when sleeping up may also be caused by cerebral vascular spasm, which can be clarified by doing transcranial Doppler examination. It is mostly seen in middle-aged and elderly patients with underlying diseases of cerebral atherosclerosis. 3. Patients who get up from sleep with dizziness, nausea and vomiting may also be caused by elevated blood pressure. If the patient has previous hypertensive disease, poor blood pressure control can appear elevated blood pressure, resulting in the patient’s head and facial vasodilatation, manifested as dizziness, nausea, and vomiting symptoms.