vertigo blood test explained

Overview

Vertigo is a sensation that you or your surroundings are spinning or moving, even when you are still. It is a symptom, not a disease itself. A blood test for vertigo is used to check for underlying conditions that might cause the spinning feeling, such as infections, anemia, or problems with the inner ear.

Yes, vertigo is a very common symptom. Many people experience it at some point in their lives, especially as they get older.

Vertigo can affect people of all ages, but it is more common in older adults. It can also affect children, often due to ear infections.

Symptoms

Common symptoms

• A spinning or whirling sensation
• Loss of balance or feeling unsteady
• Nausea or vomiting
• Sweating
• Headache
• Ringing in the ears (tinnitus) or hearing loss

Symptoms in children

• Complaints of feeling dizzy or falling
• Nausea and vomiting
• Unusual clumsiness
• Holding head still or avoiding movement

Symptoms in older adults

• Increased risk of falls
• Unsteadiness that makes walking difficult
• Nausea and vomiting
• Anxiety about moving

Causes

Main causes

• Inner ear problems, such as benign paroxysmal positional vertigo (BPPV) or labyrinthitis
• Infections, like a middle ear infection or viral illness
• Migraine (migraine-associated vertigo)
• Reduced blood flow to the brain (e.g., from dehydration or anemia)
• Medication side effects
• Neurological conditions, such as multiple sclerosis (rare)

Risk factors

• Age over 60
• History of migraines
• Recent head injury
• Ear infections or ear surgery
• Certain medications that affect balance
• Dehydration or low blood pressure

When to see a doctor

See a doctor urgently if:

• Vertigo with sudden hearing loss
• Vertigo that makes you vomit repeatedly
• Vertigo after a fall or head injury
• Vertigo with chest pain, severe headache, or weakness

Book a routine appointment if:

• If vertigo episodes last longer than a few minutes or keep coming back
• If vertigo interferes with daily activities
• If you are worried about your symptoms

Diagnosis

Your doctor will ask about your symptoms and medical history, and may perform a physical exam. They may also order tests to find the cause of your vertigo. A blood test is one of these tests. It helps check for infections, anemia, low blood sugar, or other conditions that can trigger vertigo.

Tests that may be done

• Blood tests (full blood count, inflammatory markers, blood sugar, thyroid function, and sometimes tests for infections like Lyme disease)
• Hearing test (audiometry)
• Balance test (posturography or electronystagmography)
• Imaging tests like MRI or CT scan (if a brain cause is suspected)

What to expect at your appointment

The blood test is quick and simple. A small sample of blood is taken from your arm. You may feel a brief pinch. The results usually come back in a few days. Your doctor will explain what they mean and whether further tests are needed.

Treatment

Treatment for vertigo depends on the cause. Often it gets better on its own, but some types need specific treatments. Your doctor will tailor the plan to you.

Self-care at home

• Sit or lie down immediately when you feel dizzy
• Move slowly, especially when changing positions
• Avoid bright lights, loud noises, or sudden head movements
• Stay hydrated and rest
• Use a cane or walking aid if needed

Medical treatments

Depending on the cause, doctors may recommend exercises to reposition loose crystals in the ear (for BPPV), prescribe medications to reduce dizziness or nausea, or treat an underlying infection. Always follow your doctor’s advice. Do not take any medication without consulting a healthcare professional first.

When is surgery considered?

Surgery is rarely needed for vertigo. It may be considered only if vertigo is caused by a serious inner ear problem that does not respond to other treatments, such as Meniere’s disease that severely affects quality of life.

Living with this condition

Living with vertigo can be challenging, but many people manage well with small adjustments. Keep your home safe by removing tripping hazards and using non-slip mats. Plan your day to include rest breaks, and avoid activities that trigger your symptoms.

Lifestyle tips

• Avoid sudden head movements, such as looking up or bending down quickly
• Sleep with your head slightly elevated on extra pillows
• If you drive, do not do so during a vertigo attack—wait until symptoms completely resolve
• Reduce stress with relaxation techniques like deep breathing

Diet and exercise

A balanced diet can help, especially staying well hydrated. Some people find that lowering salt intake helps if they have Ménière’s disease. Gentle exercises like walking, yoga, or tai chi can improve balance—but only do them when you are not dizzy and with your doctor’s approval.

Mental health and emotional wellbeing

Vertigo can be frightening and can cause anxiety or depression. It is normal to feel worried. If dizziness affects your mood or confidence, talk to your doctor or a mental health professional. You are not alone.

Prevention

Not all vertigo can be prevented, but you can lower your risk by staying hydrated, avoiding sudden head movements, managing stress, and treating infections early. If you have a known trigger, such as a migraine, avoiding that trigger can help.

Complications

If left untreated

• Increased risk of falls and injuries
• Ongoing nausea and vomiting leading to dehydration
• Difficulty performing daily tasks or working
• Anxiety or depression from fear of falling

Long-term outlook

For most people, vertigo gets better with time and treatment. Many causes of vertigo are not dangerous and can be managed well. With the right support, you can usually return to your normal activities.

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