postural vertigo

Positional vertigo is one of the most common forms of vertigo and typically occurs when the head is moved into a certain position. Those affected experience sudden, brief attacks of vertigo, which are very unpleasant but usually harmless. The medically correct term is benign paroxysmal positional vertigo, which means benign, episodic positional vertigo. The good news is that this form of vertigo is easily treatable and can often be successfully treated with simple positioning maneuvers.

What exactly is positional vertigo?

Positional vertigo is a type of vertigo that occurs briefly after the head is moved into a certain position. The attacks are episodic and can feel like suddenly riding a carousel. Although the symptoms are harmless, they are perceived by those affected as extremely unpleasant and sometimes even frightening. The vertigo originates in the balance organ of the inner ear, which is where it is caused.

In this context, the term benign means that there is no serious or dangerous underlying condition. The word paroxysmal describes the sudden, attack-like nature of the dizziness. Unlike other forms of dizziness, which can last longer, positional vertigo is characterized by attacks that are short-lived and subside after a few seconds to a maximum of one minute.

Difference from other forms of dizziness

It is important to distinguish positional vertigo from other forms of vertigo. With positional vertigo, for example, the vertigo persists as long as the head remains in the position that triggered it. With positional vertigo, on the other hand, the symptoms occur immediately after a change in position and then subside quickly, even if the position is maintained. This distinction can be important for the correct treatment.

The vestibular system and its function

To understand how positional vertigo develops, it helps to take a look at the vestibular system. This is located in the inner ear and is responsible for detecting changes in position and movements of the body. It consists of three semicircular canals that are aligned in different directions and register rotational movements. In addition, there are two small sacs that provide information about straight movements and gravity.

These sacs contain tiny crystals of calcium carbonate, also known as otoliths. These crystals are normally firmly embedded in a membrane and help us to perceive movement. When these crystals become loose and enter the semicircular canals, this causes positional vertigo. The connection between balance and the ear is complex and important for many bodily functions.

Causes and development

Positional vertigo occurs when small crystals detach from the vestibular system. These otoliths then enter the semicircular canals, where they do not normally belong. When the head moves, these crystals also move in the fluid of the semicircular canals. This trickling of the crystals creates a suction that irritates the sensitive sensory cells in the semicircular canal.

The problem with this is that the brain now receives conflicting information. The affected ear reports movement, while the other ear and the eyes signal something else. The brain cannot process these conflicting signals properly, resulting in a feeling of dizziness. The posterior semicircular canal is usually affected, as this is where the crystals are most likely to end up due to gravity.

Why do the crystals dissolve?

In most cases, namely in around 90 percent of those affected, it remains unclear why the crystals dissolve. Positional vertigo then appears to occur spontaneously, without any identifiable cause. However, there are known risk factors that can promote the detachment of crystals. These include head injuries or traumatic brain injuries, after which the crystals can become loose.

Inflammation of the inner ear or ear surgery can also cause the crystals to become dislodged. Certain pre-existing conditions such as Ménière's disease or migraine also appear to increase the risk. Prolonged bed rest, for example after surgery or serious illness, can also be a triggering factor, as the lack of movement means that the crystals are not held in their normal position.

Age-related and other risk factors

The risk of positional vertigo increases with age. This may be related to age-related changes in the inner ear. Osteoporosis, a condition in which bones lose density, is also discussed as a possible risk factor. A vitamin D deficiency could also play a role, as vitamin D is important for calcium metabolism and the crystals in the ear are made of calcium carbonate.

Women are about twice as likely to be affected by positional vertigo as men, although the reasons for this are not entirely clear. The peak incidence is between the ages of 40 and 70, although younger people can also be affected. It is estimated that approximately one in 40 people may experience positional vertigo at some point in their lives.

Typical symptoms and complaints

The main symptom of positional vertigo is a sudden onset of severe rotational vertigo. Those affected often describe the feeling as being on a merry-go-round or as if everything around them is spinning. This vertigo typically only occurs during certain movements. These can be movements such as lying down in bed, getting up in the morning, turning from one side to the other, bending forward, or tilting the head back.

The good news is that the attacks are short-lived. They typically last a few seconds to a minute at most, and usually less than 30 seconds. Once the head is held steady in the new position, the dizziness quickly subsides. This is an important distinguishing feature from other forms of dizziness, which can last longer.

Accompanying symptoms

In addition to the vertigo itself, other unpleasant side effects may occur. Those affected often report nausea, which in some cases can be so severe that it leads to vomiting. Sweating and general malaise are also typical. Many people develop feelings of anxiety during attacks, as the sudden, intense dizziness can be perceived as very threatening.

After the attacks, a feeling of unsteadiness may remain. Those affected sometimes describe this as feeling like they are walking on cotton wool or as if the ground is not solid under their feet. This unsteadiness can last for several minutes or even longer, even after the actual vertigo has subsided. In rare cases, tinnitus may also occur, although this is not one of the typical symptoms of positional vertigo.

Impact on everyday life

Although individual episodes of vertigo are brief, they can have a significant impact on everyday life. Many sufferers develop avoidance behaviors in order to prevent the unpleasant episodes. They avoid certain movements, turn around carefully, or only stand up slowly. Some people no longer dare to change position in bed or only sleep in a semi-sitting position.

This avoidance behavior can lead to further problems. Limited mobility can cause tension in the neck and back. Psychological consequences such as anxiety or depression can also arise if quality of life is severely restricted by dizziness. Especially in older people, the fear of falling can lead to them moving less and less and thus becoming more uncertain overall.

How is positional vertigo diagnosed?

The diagnosis of positional vertigo begins with a detailed consultation. Doctors ask about the exact symptoms, when and how the vertigo occurs, and how long it lasts. Possible triggers or pre-existing conditions are also discussed. This information is very important, as the typical description of the symptoms often provides a strong indication of positional vertigo.

Special tests are then carried out to confirm the diagnosis. The most important test is the Dix-Hallpike maneuver. The patient first sits upright with their head turned to one side, and is then quickly moved into a supine position with their head slightly hyperextended. This movement is designed to trigger the vertigo.

Observation of eye movements

During the test, the examiner closely observes the patient's eyes. Benign paroxysmal positional vertigo causes typical, involuntary eye movements known as nystagmus. These eye movements are jerky and follow a specific pattern. It is important to note that these movements do not occur immediately, but only after a short delay of a few seconds, and that they then quickly subside and disappear.

Sometimes special glasses called Frenzel glasses are used for the examination. These glasses prevent the person being examined from focusing on a fixed point, which makes it easier to observe eye movements. Depending on which maneuver triggers the dizziness and what the eye movements look like, specialists can determine which of the three semicircular canals is affected.

Further investigations if necessary

In most cases, the medical history and positioning tests are sufficient to make a diagnosis. However, if there is any doubt or the symptoms are not typical, further tests may be necessary. This is particularly important in order to rule out other, potentially more serious causes of dizziness. These tests may include hearing tests, balance tests or, in rare cases, imaging procedures such as magnetic resonance imaging.

Treatment through positioning maneuvers

The good news is that positional vertigo is very treatable. Treatment involves returning the displaced crystals in the semicircular canals to their original position. This is done using special movements called positioning maneuvers or liberation maneuvers. The success rate of this treatment is high, at up to 90 percent.

The maneuvers use gravity to move the crystals out of the semicircular canals through specific head movements. The crystals should return to the two sacs of the vestibular system, where they belong and cause no damage. The treatment is not painful, but may cause brief dizziness during the procedure as the crystals are moved.

The Epley maneuver

The Epley maneuver is one of the most commonly used treatment methods. It begins in a sitting position, with the head turned toward the affected side. The person is then quickly moved into a supine position, with the head slightly hyperextended and turned to the side. After about 30 seconds, the head is turned to the other side, and finally the person rolls onto that side, looking down.

Each position is held for about 30 seconds to allow the crystals time to move. At the end, the person is slowly returned to a sitting position. The entire maneuver takes a few minutes and is performed by professionals. It is important that there is no pillow under the head during the maneuver, as this could hinder the movement of the crystals.

Other treatment methods

In addition to the Epley maneuver, there are other effective methods. The Semont maneuver involves a faster, more vigorous movement from one side to the other. The Brandt-Daroff maneuver is particularly suitable for self-treatment at home, as it is easier to perform. Depending on which semicircular canal is affected, special maneuvers such as the barbecue maneuver or the Gufoni maneuver may also be used.

The choice of the right maneuver depends on which semicircular canal is affected. The posterior semicircular canal is most commonly affected, followed by the horizontal and anterior semicircular canals. Specialists can determine which maneuver is most suitable based on the results of the examination. The maneuvers are usually performed several times in succession to increase their success rate.

Self-treatment and exercises for home

After a medical diagnosis and thorough instruction, the positioning maneuvers can also be performed at home. This is particularly helpful if the symptoms recur or if mild symptoms persist after the initial treatment. Although self-treatment has a slightly lower success rate than therapeutically guided treatment, it can serve as a useful supplement.

It is important to only perform the maneuver recommended by your doctor. Incorrect movements could worsen the situation or cause the crystals to move to another semicircular canal. The exercises should be performed several times a day, for example three times in a row or five times in the morning. Make sure you are lying on a soft surface and it is advisable to have someone nearby in case you feel dizzy.

Rules of conduct after treatment

After performing a positioning maneuver, there are a few recommendations to ensure success. Some experts recommend sleeping with your head elevated, for example with two pillows, on the first night after treatment. Rapid head movements should also be avoided in the first few days. However, these recommendations are not uniform among all experts, and many do not consider them absolutely necessary.

In general, it is important not to restrict yourself too much. Normal everyday movements are permitted and even beneficial. Excessive rest can cause the crystals to dissolve again or the instability to become more pronounced. Most people can resume their normal activities shortly after treatment, but should be a little more cautious during the first few days.

Medications and other treatment options

Medication plays a minor role in the treatment of positional vertigo. It cannot influence the cause, i.e., the displaced crystals, and is therefore not suitable for treating the underlying cause. In some cases, however, medication can be used in the short term to treat nausea or dizziness, especially if the symptoms are very severe or vomiting occurs.

These medications, which include antihistamines or special anti-vertigo drugs, should only be taken for a short period of time. Long-term use is not advisable and can even be detrimental, as it can interfere with the natural adjustment of the vestibular system. The medications are only intended to relieve symptoms and should not replace treatment with positioning maneuvers.

Surgical treatment in exceptional cases

In very rare cases, affecting less than one percent of those affected, surgery may be considered. This is only an option if all other treatment methods have failed and the symptoms are severely impacting the patient's life. Surgery involves closing the affected semicircular canal or interrupting its nerve supply. However, this leads to permanent impairment of the balance organ and should therefore only be considered as a last resort.

Course and prognosis

The prognosis for positional vertigo is generally good. The condition is not dangerous and often disappears without treatment. Around half of those affected are symptom-free within three months, even without therapy. The crystals can move back into the correct position by themselves or dissolve. However, without treatment, the vertigo can persist for months or even years, which is why early therapy is recommended.

After successful treatment with positioning maneuvers, most people are symptom-free immediately or within a few days. In some cases, a slight feeling of unsteadiness may persist for a few days until the balance system has fully adjusted. This feeling usually disappears on its own and can even disappear more quickly with normal movement and activity.

Relapses and recurrence

An important aspect is that relapses are not uncommon in positional vertigo. In about 30 to 50 percent of those affected, the symptoms recur within two years. The probability of a relapse within five years is estimated at about 30 to 35 percent. The reasons for these relapses are not fully understood, but it is thought that crystals may be dislodging again.

The good news is that people who have already been successfully treated can often perform the positioning maneuvers themselves if the symptoms return. Appropriate training by specialists is helpful in this regard. Many people feel more confident knowing that they can take action themselves in the event of a relapse. Nevertheless, if you are unsure or if self-treatment does not help, you should always seek medical advice.

Risks and complications

Although positional vertigo itself is harmless, it can have indirect consequences. The greatest risk is an increased risk of falling. If a vertigo attack occurs when standing up or walking, it can lead to a fall. Such falls can result in serious injuries, especially in older people. The fear of falling can in turn cause those affected to move less, which leads to further problems such as muscle loss and uncertainty when walking.

The avoidance behavior triggered by dizziness can severely impair quality of life. When people avoid certain movements for fear of dizzy spells, only lie carefully in bed, or hardly dare to move their head, this can lead to tension. Constant tension and worry can also be stressful and lead to sleep disorders or exhaustion. The increased risk of falling due to balance problems is an important aspect.

Psychological effects

The psychological consequences of positional vertigo should not be underestimated. The sudden, intense feeling of dizziness can be very frightening. Some people develop a real fear of the attacks, which can lead to phobias. These fears can take on a life of their own and persist even after the actual vertigo has been treated.

Depressive moods can also occur in cases of prolonged or frequently recurring symptoms. The reduction in quality of life, uncertainty in everyday life, and feelings of helplessness can be stressful. In such cases, it can be helpful to seek psychological support in addition to physical treatment. Relaxation techniques such as progressive muscle relaxation or breathing exercises can also be helpful in dealing with anxiety.

Tips for everyday life with positional vertigo

Until the treatment takes effect or if relapses occur, there are some practical tips that can make everyday life easier. Slow, deliberate movements can help prevent or alleviate dizzy spells. When getting out of bed, it is a good idea to first sit on the edge of the bed and wait a moment before standing up. Turning over in bed should also be done slowly and carefully.

It can be helpful to make the environment as safe as possible. Tripping hazards should be removed, slippery floors avoided, and sufficient lighting provided. Handrails in the bathroom or next to the bed can provide additional safety. If you feel unsteady when walking, a walking stick can offer support. However, it is important not to restrict yourself too much, as normal movement is important for the balance system.

When should medical help be sought?

Although positional vertigo is harmless, there are situations in which medical advice is important. When dizziness occurs for the first time, an examination should always be carried out to confirm the diagnosis and rule out other causes. Even if the symptoms differ from the typical characteristics, for example if the dizziness lasts longer than a minute, is continuous, or is accompanied by hearing problems, headaches, or neurological deficits, a medical examination is necessary.

If you experience very severe or frequent episodes of vertigo that significantly impair your quality of life, you should also seek professional help. If self-treatment with positioning maneuvers does not help or if the symptoms return very quickly after treatment, it is advisable to seek further medical advice. In some cases, a specialized examination at a vertigo clinic or by ear, nose, and throat specialists may be necessary.

Prevention and long-term prospects

Unfortunately, there is no sure way to prevent positional vertigo, as the exact causes often remain unclear. However, some measures may reduce the risk. An adequate supply of vitamin D and calcium could be important, as these substances play a role in bone metabolism and possibly also in the stability of the crystals in the ear. Regular exercise and avoiding prolonged bed rest may also be helpful.

For people who have already experienced positional vertigo, it can be helpful to perform the exercises they have learned occasionally as a preventive measure. Some experts recommend doing the Brandt-Daroff exercises regularly to train the balance system and possibly prevent relapses. However, there is no clear evidence that this is actually effective.

Long-term outlook

For most people with positional vertigo, the long-term outlook is very good. Although relapses can occur, the condition can usually be treated effectively. With increasing age, the balance system can generally deteriorate somewhat, which can lead to increased susceptibility to vertigo. However, regular exercise and an active lifestyle can help to train your balance and maintain stability.

It is important to know that positional vertigo is not a progressive condition and does not cause permanent damage to the vestibular system. After successful treatment, the vestibular system is fully functional again. Even though the symptoms are unpleasant, there is no need to worry about long-term consequences. With the right treatment and, if necessary, a little patience, most people can lead a normal, active life without being restricted by vertigo. Quality of life in old age can be influenced by various factors, and well-being should always be the focus.