What Causes Dizziness and Nausea?


Dizziness and nausea can be caused by various factors, and the combination of these symptoms may indicate different underlying conditions. Some common causes of dizziness and nausea include:

  • Inner Ear Disorders:
    • Vertigo: Conditions affecting the inner ear, such as benign paroxysmal positional vertigo (BPPV), vestibular neuritis, or Meniere’s disease, can cause vertigo (a spinning sensation) along with nausea.
  • Motion Sickness:
    • Motion sickness occurs when there is a mismatch between visual input and signals from the inner ear, commonly during travel by car, boat, or plane.
  • Migraines:
    • Migraines can cause severe headaches accompanied by symptoms like dizziness, nausea, and sensitivity to light and sound.
  • Low Blood Sugar (Hypoglycemia):
    • A drop in blood sugar levels, often associated with conditions like diabetes or fasting, can lead to symptoms like dizziness, nausea, and weakness.
  • Dehydration:
    • Insufficient fluid intake or excessive fluid loss (through vomiting, diarrhea, or sweating) can cause dehydration, leading to dizziness and nausea.
  • Anxiety and Stress:
    • Anxiety or high-stress levels can trigger physical symptoms, including dizziness and nausea.
  • Infections:
    • Various infections, such as the flu or other viral infections, can cause dizziness and nausea.
  • Medication Side Effects:
    • Some medications may have side effects that include dizziness and nausea.
  • Ear Infections:
    • Infections affecting the ear, especially the inner ear, can disrupt the balance mechanism and lead to dizziness and nausea.
  • Hypotension (Low Blood Pressure):
    • Low blood pressure can result in inadequate blood flow to the brain, leading to dizziness and nausea.
  • Pregnancy:
    • Hormonal changes during pregnancy can cause morning sickness, characterized by nausea and, in some cases, dizziness.
  • Gastrointestinal Issues:
    • Conditions such as gastritis, acid reflux, or other digestive disorders can cause nausea and may be associated with dizziness.
  • Medication Withdrawal:
    • Abrupt discontinuation of certain medications or substances, such as alcohol or drugs, can cause withdrawal symptoms, including dizziness and nausea.

If dizziness and nausea are severe, persistent, or accompanied by other concerning symptoms such as chest pain, difficulty breathing, or confusion, it is important to seek medical attention promptly. A healthcare professional can conduct a thorough evaluation, including a medical history and physical examination, to determine the underlying cause and recommend appropriate treatment or intervention.

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