What causes dizziness, nausea, sweating, and the urge to vomit?

　　In daily life, many people experience noticeable symptoms such as dizziness and nausea. Sometimes these symptoms result from excessive fatigue; however, in other cases, they may stem from underlying medical conditions. Unfortunately, many individuals fail to recognize the significance of these symptoms, assuming them to be trivial or non-serious—and thus neglect seeking targeted medical treatment. Consequently, their underlying condition may worsen.

　　What Causes Dizziness, Nausea, Sweating, and the Urge to Vomit?

　　Dizziness accompanied by nausea, sweating, and the urge to vomit may be caused by anemia, hypotension, cerebral hypoperfusion, or the common cold. Anemia has complex and multifactorial pathogenesis involving systemic diseases and various mechanisms—such as reduced or insufficient red blood cell production, excessive red blood cell destruction, or significant blood loss—leading to diverse manifestations across multiple organ systems, including fatigue, dizziness, nausea, dry heaving, and diaphoresis. Blood pressure fluctuations—particularly hypotension—can likewise trigger fatigue, dizziness, palpitations, pallor, nausea, and vomiting. Cerebral hypoperfusion commonly occurs in middle-aged and elderly individuals, especially those over 60 years old. Inadequate cerebral blood supply disrupts normal cerebral circulation, resulting in dizziness, memory impairment, fatigue, nausea, and vomiting. If these causes are ruled out, the symptoms may also be attributable to the common cold. Upper respiratory tract infection associated with the common cold can cause rhinorrhea, sneezing, pharyngeal dryness, cough, pharyngeal pruritus, low-grade fever, dizziness, nausea, myalgia, and diaphoresis.

　　When experiencing symptoms such as dizziness, nausea, sweating, and vomiting, it is essential first to exclude central nervous system etiologies—including vertebrobasilar insufficiency, posterior circulation infarction or hemorrhage. Next, peripheral causes should be considered, such as vestibular neuritis, vestibular migraine with vertigo, sudden sensorineural hearing loss with vertigo, Ménière’s disease, and benign paroxysmal positional vertigo (BPPV). Patients presenting with dizziness and nausea should initially consult a neurologist and undergo cranial CT or MRI to rule out cerebral infarction or intracranial hemorrhage. Subsequently, cerebrovascular imaging (e.g., MRA, CTA, or DSA) should be performed to assess for intracranial vascular stenosis. When clinically indicated, vestibular function testing and audiometry should be conducted to evaluate for vestibular dysfunction.

　　Patients experiencing dizziness, nausea, sweating, and the urge to vomit should seek prompt medical evaluation and treatment to prevent disease progression. We hope this information proves helpful. Wishing you optimal health and a joyful life!