Boston Children's Hospital is monitoring the developing situation with lead contamination in some Boston Public Schools. Please contact your primary care physician if you have any concerns about your child.
Boston Children’s Hospital está monitoreando la situación de la contaminación por plomo en algunas escuelas públicas de Boston. Por favor, póngase en contacto con su médico primario si usted tiene alguna preocupación acerca de su hijo.
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Paroxysmal Positional Vertigo (BPPV)
Benign Paroxysmal Positional Vertigo (BPPV) causes recurring, brief episodes of vertigo, meaning a child feels a sensation that the world around her is spinning.
These episodes, typically lasting a few seconds to minutes, are usually prompted by lying down, rolling over in bed, turning the head, or similar movements. BPPV results from displacement of crystals called otoliths in the balance organs of the inner ear. These crystals normally rest on a jelly-like structure called the macula. A minor head injury can cause the crystals to dislodge from the macula and move around the inner ear.
Turning the head can also cause the dislodged crystals to stimulate another part of the inner ear called the posterior semicircular canal. This results in s sensation of vertigo.
How Boston Children’s Hospital approaches BPPV
We diagnose BPPV with a test called the Dix-Hallpike maneuver. For this test, your child’s doctor will move her quickly from a sitting position to a lying-down position while she wears special glasses capable of detecting subtle eye movements that are typical of the disorder.
BPPV usually resolves on its own after a few weeks, even without treatment. It can also be successfully treated with the Epley maneuver. In this maneuver, the doctor moves the child into a series of positions, attempting to move the displaced crystals in the inner ear back into their proper position.
Benign Paroxysmal Vertigo of Childhood (BPVC)
Benign Paroxysmal Vertigo of Childhood (BPVC) typically affects children starting at 4 years of age or younger. It is characterized by recurring episodes of vertigo (sensation that one’s surroundings are spinning) that last from seconds to minutes at a time.
Additional Symptoms include:
During the attacks, there is no loss of consciousness, and a complete recovery usually follows an attack.
How Boston Children’s Hospital approaches BPVC
We diagnose BPVC by a series of criteria, based on a child’s symptoms and a number of other important factors in their medical and family background.
There is no specific test for BPVC, but many tests may be needed to rule out other causes of dizziness before your child is diagnosed with BPVC. These tests may include a hearing test and balance tests, which can be done right here at our Balance and Vestibular Program, as well as imaging tests, such as an MRI.
BPVC episodes are typically infrequent and brief, so the disorder does not typically require treatment. However, evaluation of children with suspected BPVC is important to rule out dangerous and/or potentially treatable causes of dizziness.
Labyrinthitis and Vestibular Neuronitis
Labyrinthitis usually causes a relatively sudden onset or hearing loss in one ear, along with symptoms of severe dizziness or vertigo (sensation that one’s surroundings are spinning). The vertigo usually lasts for several days, then gradually improves. The hearing loss may or may not improve.
How Boston Children’s Hospital approaches Labyrinthitis and Vestibular Neuronitis
We diagnose labyrinthitis and vestibular neuronitis by the combination of an onset of symptoms that fit the typical course of one of these disorders, as well as a series of tests that evaluate hearing and vestibular/balance function.
The most useful tests are called rotational chair testing and caloric testing. The hearing test, as well as all of the vestibular/balance tests, can be done right here at our Balance and Vestibular Program.
The initial severe vertigo from labyrinthitis and vestibular neuronitis can be treated with medications, such as meclizine. If the damage from the labyrinthitis and vestibular neuronitis becomes permanent, then treatment usually centers around “retaining” the normal balance organs on the other side of the head to fill the role of the damaged balance organs.
This process can be helped by exercises that are done under the supervision of a specially-trained physical therapist.
Ménière's Disease is an inner ear disorder. Its classic symptoms include:
These vertigo episodes can often be severe and incapacitating, and the hearing loss may eventually progress into permanent deafness.
Ménière's Disease results from endolymphatic hydrops, an abnormal swelling of certain structures of the inner ear. However, the exact cause of the swelling is not entirely clear.
Although Ménière's Disease is often seen in the adult population, children can also be affected by this debilitating inner ear disorder.
How Boston Children’s Hospital approaches Ménière's Disease
We diagnose Ménière's Disease with a series of criteria based on your child’s symptoms:
All of these tests can be done right here at our Balance and Vestibular Program.
Many medications and heavy medal exposures can cause ototoxicity (temporary or permanent injury to the structures of the inner ear). This can result in hearing loss, dizziness, and imbalance typically affects children starting at 4 years of age or younger. It is characterized by recurring episodes of vertigo (sensation that one’s surroundings are spinning) that last from seconds to minutes at a time.
Other medications that may have ototoxic effects:
Toxic exposures to lead and mercury can also cause ototoxicity.
The symptoms of ototoxicity in children include:
How Boston Children’s Hospital approaches ototoxicity
Ototoxicity is usually suspected when a child develops hearing loss or dizziness/imbalance either during or soon after treatment with a medication that is known to be ototoxic. Ototoxicity from heavy metals, such as lead or mercury, may be much more difficult to detect and may require special blood tests to check for abnormal levels of these metals in your child’s bloodstream.
A hearing test is required to evaluate hearing from ototoxicity. Sometimes, your doctor may want your child to undergo multiple hearing tests during a long-term treatment with a known ototoxic medication to monitor for development of hearing loss, even if your child is not yet experiencing a sensation of hearing loss or imbalance.
Vestibular and balance tests may also be needed to see if vestibular function is affected and to rule out other causes of dizziness and hearing loss before your child is diagnosed with ototoxicity. These test can be done right here at the Balance and Vestibular Program.
The main treatment for ototoxicity is to stop the administration of the offending medication. The effects of some ototoxic medications, such as aspirin and diuretics, on hearing and balance are temporary, while the effects of others, such as the aminoglycosides, can be permanent.
Patients with permanent balance problems and longstanding dizziness from ototoxicity may benefit from vestibular rehabilitation therapy, in which a specially-trained physical therapist will help the child with exercises to “retain” his balance organs.
A concussion is a mild form of traumatic brain injury (TBI), usually occurring after a blow to the head from an accident, such as a car crash, a fall, or a sports injury.
In addition to headache and dizziness, post-concussion symptoms may also include:
Post-concussion syndrome is typically diagnosed when these symptoms persist for greater than 3 months after the injury, though the criteria for diagnosing the syndrome vary.
How Boston Children’s Hospital approaches post-concussion syndrome
Post-concussion syndrome is diagnosed by a series of criteria based on a child’s symptoms, the relationship of their symptoms to the specific traumatic event, and by exclusion of other medical causes of their symptoms.
Many tests may be needed to rule out other causes of dizziness and headache before your child is diagnosed with post-concussion syndrome. These tests may include vestibular and balance tests, which can be done right here at the Balance and Vestibular Program, as well as imaging tests, such as an MRI.
There is no specific treatment or cure for post-concussion syndrome, although many children may benefit from cognitive behavioral therapy that can be implemented by a psychologist.
Children with persistent dizziness or imbalance from concussion may require vestibular rehabilitation, which is supervised by a specially-trained clinician (e.g. physical therapist) and involves exercises that are designed to “retain” the balance system.
Superior Semicircular Canal Dehiscence (SSCD)
Superior Semicircular Canal Dehiscence (SSCD) is a recently discovered disorder. SSCD occurs when one of the balance organs of the inner ear, the superior semicircular canal, develops an abnormal communication with the inside of the child’s skull.
While the classic symptom of SSCD is dizziness/vertigo in response to loud noises or pressure changes in the middle ear, other, more unusual symptoms may include:
How Boston Children’s Hospital approaches SSCD
All of the balance tests, as well as the VEMP test and the hearing test, can be done right here at our Balance and Vestibular Program.
While SSCD in adults is usually managed surgically, it is treated much more conservatively in children:
Vestibular migraine, also known as migrainous vertigo or migraine-associated vertigo, is the most common cause of dizziness and vertigo in children. Migraine headaches, often localized to the frontal or peri-orbital region, may precede, follow, or occur simultaneously with dizziness/vertigo.
Many patients with vestibular migraine see flickering or vibrating lights just before a dizziness episode or headache begins. This is referred to as visual aura. Also, they may become very sensitive to light or loud sounds when they are experiencing a dizziness episode or headache.
How Boston Children’s Hospital approaches vestibular migraine
Vestibular migraine is diagnosed by a series of criteria based on a child’s symptoms and a number of other important factors in their medical and family background.
Although there is no specific test for vestibular migraine, many tests may be needed to rule out other causes of dizziness and headache before your child is diagnosed with vestibular migraine. These tests may include a hearing test and vestibular/balance tests, such as an MRI.
We can help identify triggers (e.g. certain food) to avoid the symptoms. We will prescribe medications, if necessary, to treat vestibular migraine.
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