Overview
Dizziness is a broad term people use for several different feelings, including lightheadedness, faintness, unsteadiness, or vertigo, which is a spinning sensation. Because it can mean different things, the cause is not always obvious without more questions and an exam. Some causes are minor and temporary, while others need prompt medical attention.
Key Symptoms
People may describe dizziness as feeling weak, floating, off-balance, about to faint, or as if they or their surroundings are moving. It may happen with nausea, vomiting, ringing in the ears, hearing changes, headache, blurred vision, sweating, or palpitations. Symptoms may come on when standing up, turning the head, walking, exercising, or during illness.
Causes and Risk Factors
Common causes include dehydration, overheating, standing up too quickly, viral illnesses, low blood pressure, low blood sugar, anxiety, and side effects from medicines or alcohol. Vertigo often relates to the inner ear or balance system. Other possible causes include anemia, heart rhythm problems, migraine, pregnancy, infection, or neurological conditions. Risk can be higher in older adults, people taking multiple medicines, and people with heart, ear, or blood pressure problems.
Who Is Affected
Dizziness can affect people of any age, but it becomes more common with aging. Older adults may be more likely to have balance problems, medication side effects, dehydration, or low blood pressure when standing. Children and younger adults can also have dizziness from infections, low fluid intake, migraine, stress, or inner ear conditions.
Diagnosis and Tests
A healthcare professional usually starts by asking what the dizziness feels like, when it began, what triggers it, and what other symptoms are present. They may check blood pressure while lying down and standing, examine the ears and eyes, test balance and nerves, and review medicines. Depending on the situation, tests may include blood tests, hearing tests, heart tracing, or brain imaging.
Treatment Categories
Treatment depends on the cause rather than the symptom name alone. Care may involve fluids, rest, medication review, treatment of an ear problem, management of blood pressure or blood sugar issues, balance therapy, or treatment for heart or neurological conditions. If a medicine seems related, changes should be guided by a qualified healthcare professional.
Living With It
Until the cause is clear, move slowly when standing, use handrails, and avoid driving, climbing, or operating machinery if you feel faint or off-balance. Keeping a note of when dizziness happens, how long it lasts, and what else you felt can help with medical assessment. Repeated dizziness can increase the risk of falls, so home safety steps may be important.
Diet and Lifestyle
Drinking enough fluids, especially in hot weather or during illness, may help prevent dizziness linked to dehydration. Regular meals can help some people avoid dizziness related to low blood sugar. Limiting alcohol and being cautious with caffeine may help in some cases, especially if symptoms are linked to dehydration, palpitations, or migraine triggers.
When to Seek Medical Care
Arrange medical care if dizziness is new, keeps returning, is getting worse, causes falls, or is linked with hearing changes, palpitations, chest discomfort, severe vomiting, or trouble walking. Medical advice is also important if you are pregnant, have diabetes, heart disease, anemia, or take medicines that may affect blood pressure or balance. Ongoing or unexplained dizziness should be properly evaluated.
When It May Be an Emergency
Get urgent help right away if dizziness starts suddenly with weakness on one side, facial droop, trouble speaking, severe headache, confusion, fainting, seizure, chest pain, severe shortness of breath, or loss of vision. Seek emergency care after a head injury or if the person cannot stand, is difficult to wake, or has signs of stroke or a serious heart problem. These warning signs need immediate assessment.