Patients with dizziness, nausea, and dry heaving are mainly considered for the following reasons, i.e., cardiovascular and cerebrovascular problems, gastrointestinal problems, and high blood pressure, as follows: Firstly, cardiovascular and cerebrovascular problems: if the elderly suddenly experience the above, acute cardiovascular and cerebrovascular problems, such as cerebral insufficiency of blood supply or cardiac insufficiency of cerebral supply, are considered to be the causes of dizziness, nausea, and dry heaving. Secondly, gastrointestinal problems: If the patient’s medical history is relatively simple, and the patient is a young man with sudden dizziness and nausea, it is more likely to be due to gastrointestinal causes, such as gastrointestinal colds or febrile illnesses caused by dizziness, nausea, and the desire to vomit. The third aspect, high blood pressure: if the patient has a history of hypertension, and currently there is emotional stimulation, we must consider that the problem is caused by fluctuations in blood pressure, elevated blood pressure, high blood pressure will lead to dizziness, head swelling, nausea, dry heaving symptoms.