vertigo CT scan preparation

Overview

Vertigo is a dizzy feeling that makes you or your surroundings seem to spin. A CT scan (computed tomography) is a special X-ray that takes detailed pictures of the inside of your body, including your head and inner ear. Your doctor may ask you to have a CT scan to help find out what is causing your vertigo, especially if they suspect a problem in your brain or the balance organs in your ear. This article explains what to expect and how to prepare.

CT scans are a common and widely used test in hospital settings. Vertigo is also a very common condition, so combining both for diagnostic evaluation is a routine step in many health systems.

Vertigo can affect people of all ages, but it becomes more common as you get older. It can also affect children. Anyone with persistent dizziness or balance problems may be referred for a CT scan to help find the cause.

Symptoms

Common symptoms

• A spinning or whirling sensation, either that you are spinning or the room is spinning around you
• Feeling off-balance or unsteady on your feet
• Nausea or vomiting
• Ringing in the ears or hearing changes
• Headache or feeling of fullness in the ear
• Blurred vision or difficulty focusing

Symptoms in children

• Children may have trouble describing dizziness, so they may say things like 'the room is moving' or 'I feel funny'
• They may hold onto furniture, sit down suddenly, or cling to a parent
• Nausea and vomiting are common in children with vertigo
• Kids may also experience headaches, ear pain, or a recent cold or ear infection

Symptoms in older adults

• A greater risk of falls and injuries because balance is weaker
• Feelings of light-headedness or swaying rather than true spinning
• May also have hearing loss or age-related changes in the inner ear
• Symptoms can be triggered by simple head movements, like looking up or turning in bed

Causes

Main causes

• Inner ear problems, such as benign paroxysmal positional vertigo (BPPV), which is caused by tiny crystals in the ear canal
• Vestibular neuritis or labyrinthitis, which is an inflammation of the inner ear, often after a viral infection
• Meniere's disease, a condition that affects ear pressure and causes vertigo, ringing in the ears, and hearing loss
• Migraine-associated vertigo, where dizziness occurs as part of a migraine headache
• Head injury that damages the inner ear or the balance centres in the brain
• Rarely, more serious conditions like a stroke or a tumour affecting the brain or ear, which a CT scan can help detect

Risk factors

• Being over 50 years old
• Having had a recent viral illness, especially a cold or flu
• Past head injury or whiplash
• Family history of migraines or dizziness
• Smoking or heavy alcohol use
• Taking certain medicines that can affect balance (always check with your doctor)

When to see a doctor

See a doctor urgently if:

• Your vertigo is severe and comes on suddenly, especially with a headache, weakness, or trouble speaking
• You are unable to eat or drink because of repeated vomiting
• You have new hearing loss or ringing in one ear
• Your dizziness started right after a head injury
• You have a fever and a stiff neck
• You feel chest pain, have trouble breathing, or feel like you might faint

Book a routine appointment if:

• You have dizziness that does not go away or keeps coming back
• You are worried about your symptoms and want to have them checked
• Your doctor has recommended a CT scan and you need to know how to prepare
• You need a referral for a specialist or balance clinic

Diagnosis

Your doctor will start by asking about your symptoms, medical history, and any medicines you take. They will also do a physical exam that includes checking your eyes, ears, and balance. If they need a closer look inside your head or ear, they may request a CT scan to rule out serious conditions.

Tests that may be done

• Physical and neurological examination
• Hearing test (audiometry)
• Balance tests, such as electronystagmography (ENG) or videonystagmography (VNG)
• Blood tests to check for infection or other causes
• CT scan of the head and inner ear
• Sometimes an MRI (magnetic resonance imaging) is used instead, if more detail is needed

What to expect at your appointment

Before a CT scan, you will be asked to remove any metal objects, like jewellery or hairpins. You may be asked not to eat or drink for a few hours if contrast dye is used. The scan itself is painless: you lie on a table that slides into the doughnut-shaped machine. You will need to stay still for a short time while the images are taken. The whole process usually finishes within 15 to 30 minutes. After the scan, you can resume your normal activities unless your doctor tells you otherwise. If you received contrast dye, you may be asked to drink plenty of water to help flush it out.

Treatment

Treatment for vertigo depends on the underlying cause. Once your doctor knows what is triggering your dizziness, they can suggest the best plan for you. This may include repositioning movements for certain inner ear issues, medicines to help with nausea, or exercises to retrain your balance.

Self-care at home

• Rest in a dark, quiet room during a vertigo episode
• Move your head slowly and avoid sudden changes in position
• Use a walking aid if you feel unsteady
• Avoid caffeine, alcohol, and tobacco, as they can make dizziness worse
• Make your home safer by removing rugs and keeping walkways clear
• Sit down immediately when you feel dizzy to avoid falling

Medical treatments

Your doctor may recommend treatment approaches such as canalith repositioning (a series of head movements to move ear crystals back into place), balance retraining therapy (vestibular rehabilitation), or medicines that help relieve nausea and dizziness. Some conditions may benefit from changes to your diet or treating an underlying illness. Always talk to your doctor about your options — never use any medicine without their advice.

When is surgery considered?

Surgery is rarely needed for vertigo. It may be considered only if a specific structural problem, such as a tumour or severe inner ear disorder, is found and does not respond to other treatments. Your doctor will discuss this only if it is relevant to your case.

Living with this condition

Living with vertigo means learning to manage your symptoms and preventing falls. Plan your day so you have time to rest, and try to avoid movements that trigger your dizziness. Keep a diary of what you were doing when vertigo started — this can help you and your doctor find patterns and triggers.

Lifestyle tips

• Get enough sleep and try to reduce stress
• Avoid sudden turns of the head while driving or operating machinery
• Keep a steady handrail in stairways and bathrooms
• Slow down when you stand up, and sit on the edge of the bed for a moment before getting up
• Tell your family and friends about your condition so they can support you
• If you have a fall risk, consider using a cane or walker

Diet and exercise

A balanced diet and regular gentle exercise can help your overall well-being. Some people find that limiting salt reduces the pressure in their inner ear. It is also a good idea to stay hydrated. If you are well enough, activities like walking, swimming, or tai chi can improve your balance over time — but always ask your doctor what is safe for you.

Mental health and emotional wellbeing

Vertigo can be worrying and may make you feel anxious or depressed. It can affect your confidence to work, drive, or socialise. These feelings are normal and important to talk about. Your doctor can offer support or refer you to counselling if needed. Remember, you are not alone, and getting help for your emotional health is just as important as treating the physical symptoms.

Prevention

Not all vertigo can be prevented, especially if it is caused by an inner ear problem or a viral infection. However, you can reduce your risk of injuries from vertigo by taking steps to prevent falls, avoiding triggering movements, and wearing protective headgear during risky activities. If you have high blood pressure or diabetes, controlling these conditions can help lower your risk of some causes of dizziness.

Vaccines

Vaccinations are not directly used to prevent vertigo, but staying up to date on vaccines, such as the flu vaccine, may reduce the chance of viral infections that can lead to inner ear problems. Talk to your doctor about which vaccines are right for you.

Screening programmes

There is no routine screening test for vertigo. If you have repeated or severe dizziness, your doctor will check you individually and decide whether any scans or tests are needed.

Complications

If left untreated

• Falls and injuries, such as broken bones or head trauma
• Imbalance that makes it hard to walk or do daily tasks
• Anxiety and fear of having another episode
• Long-term hearing loss (if the underlying cause is inner ear disease)
• Rarely, missing a serious underlying condition, like a stroke, that needs urgent treatment

Long-term outlook

Most vertigo resolves on its own or improves with treatment. Even when it takes longer to settle, many people learn to manage their symptoms and lead full, active lives. A CT scan is a safe step that can provide helpful answers and give you confidence in your care plan. With the right support, you can cope well and function day to day.

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