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Otosclerosis

When there is abnormal growth of the bone of the middle ear, otosclerosis is said to occur. This disease of ear bone degeneration is usually noticed during early adult years. The bones of the ear turn into spongy bone tissue and lead to excessive buildup of bone tissue. This impairs the hearing process since there is a barrier to sound being conducted to the inner ear. The bones are then unable to vibrate and pass the sound into the inner ear. Usually the outer and middle ear are affected, leading to conductive hearing loss. Nerves of the ears may also get affected, leading to senso-neural hearing loss. Otosclerosis is noticed to occur in persons with family history of hearing loss. Hearing may be impaired in one or both ears. This condition affects nearly 10% of the American population. Pregnancy is known to trigger this condition in some women.


One of the most common symptoms of otosclerosis is tinnitus (noise originating inside the ear). Hearing loss may be gradual, which is why this condition is not often diagnosed at the early stage. Other accompanying symptoms are dizziness and balance problems. In many cases, persons suffering from otosclerosis are not even aware of their condition and do not seek medical help. An otologist (ear physician) will need to conduct a physical examination and study the history of hearing loss This condition can be diagnosed with the help of audiometric examination and special x-rays. A CT scan of the temporal bone can help in ruling out other causes of hearing loss. The hearing and balance functions will be assessed with various tests and procedures. Audiometry, tympanometry and tuning fork tests are conducted to test the extent of hearing loss.


A hearing aid is used to treat this condition when the hearing loss is mild. You can take the help of an audiologist to choose the one that fits your specific needs best. Doses of oral sodium fluoride are known to improve otosclerosis. Sodium fluoride aids calcification of new bone and checks further otoscelerotic damage. Fluoride medication along with calcium and Vitamin D are prescribed. A surgical procedure known as stapedectomy is performed to replace the fixed stapes bone in the ear with a prosthesis. This device allows sounds waves to pass to the inner ear. The stapes bone is either completely or partially removed. The laser stapedectomy surgery is usually performed under local anaesthesia and is an outpatient procedure. Only one year is operated at a time. In most of the cases, stapedectomy benefits the patient suffering from otosclerosis. After surgery, a patient must avoid loud noises and sudden changes in pressure for a few weeks. Rarely are there complications with this surgery leading to total deafness or formation of blood clots in the ear.

Presbycusis

Presbycusis refers to age-related hearing loss. This condition is noticed in about 30% adults over the age of 70 years. Aging results in changes in the inner ear or middle ear of a person. This can lead to gradual loss of hearing. Often the person is not even aware of the diminished hearing. Sometimes heart disease, circulatory problems, diabetes or hypertension can cause changes in the blood supply to the ear. This may lead to mild or moderate loss of hearing. Hereditary factors and side-effects of medications can also bring about presbycusis.


A patient suffering from Presbycusis will find it difficult to comprehend conversations clearly. Hearing loss is greater for high-pitched sounds. A person suffering from presbycusis may find it more difficult to hear a woman's voice. Some sounds may appear too loud and deafening. There may be tinnitus in one or both ears. A patient may be advised to use a hearing aid. The use of ear muffs or ear plugs can help in reducing further hearing loss.


Turner Syndrome

Turner Syndrome is a condition that affects only girls or women. Most people are born with two chromosomes. While a boy inherits the X chromosome from his mother and Y chromosome from his father, a girl inherits one X chromosome from each parent. In case of Turner syndrome, one copy of the X chromosome is missing or partially missing or is significantly changed.


Named after Henry Turner, the first doctor who reported it in 1938, Turner Syndrome is one of the most common chromosomal disorders and likely the most common genetic disorder of females.


Genetic alterations that causes Turner Syndrome

Monosomy: Complete absence of X chromosome - caused due to an error of father's sperm or in the mother's egg.

Mosaicism: An error that occurs in cell division during early stages of fetal development.

Y chromosome: In a small percentage of Turner Syndrome patients, some cells have only one copy of X chromosome and other cells have one copy of the X chromosome and some Y chromosome material. Though these individuals develop biologically as girls, due to the presence of Y chromosome material increase, the risk of developing a type of cancer called gonadoblastoma is present.

Turner Syndrome can cause a variety of medical problems. Short height, puberty failure, infertility, heart defects and learning disabilities and social adjustment problems are some of the prominent signs of this syndrome. Family history is not a risk factor in this syndrome as it is quite unlikely that parents of one child with this syndrome will have another child with the same disorder.


Prenatal symptoms

Prenatal ultrasound of a baby with Turner Syndrome may reveal:


  • Heart abnormalities,
  • Large or abnormal fluid collection at the back of neck,
  • Kidney abnormalities.

Physical features of Turner Syndrome at birth and during infancy

A wide neck, receding small lower jaw, high narrow roof of the mouth, low-set ears, low hairline behind neck, broad chest with widely spaced nipples, short fingers and toes, arms that turn outward at the elbows, narrow and upward turned fingernails and toes, swelling of hands and feet at birth, smaller than average height at birth and delayed growth.


Physical features noticeable in girls in teens/ young women

There could be occurrences when Turner Syndrome is not quite apparent. Some noticeable features are: No growth spurts, short stature – less than might be expected for a female member of the family, learning disabilities especially that involve spatial concepts or math, inability to understand other people's emotions and social situations, absence of sexual changes expected during puberty due to ovarian failure, early end to menstrual cycles but not due to pregnancy, lack of sexual development during teenage years, inability to conceive a child without fertility treatment.


Diagnosis

Sometimes even during fetal development, diagnosis of this syndrome can be made. While ultrasound screening may raise suspicion of Turner Syndrome in the baby; prenatal screening tests that evaluate the baby's DNA in the mother's blood could also indicate an increased risk of this syndrome. Other than the characteristic physical features described above, Turner Syndrome may be diagnosed prenatally, before birth, during infancy or in early childhood, although sometimes the diagnosis might be delayed. It is imperative that girls and women with this syndrome undergo ongoing medical care from a variety of specialists and regular checkups and appropriate care are taken.


Clinical testing

Karyotyping is a laboratory test that evaluates the chromosomes which is usually the determining factor for Turner Syndrome. In most cases a blood sample is taken to ascertain a person's karyotype. This syndrome is increasingly diagnosed before birth based on chromosomal analysis subsequent to amniocentesis or Chorionic Villus Sampling CVS. A sample of fluid that surrounds the developing fetus is removed and analyzed. In CVS, it involves the removal of tissue samples from a portion of the placenta. Accumulation of lymph fluid near the neck of a developing fetus can sometimes be seen on a routine fetal ultrasound.


MRI is performed in those affected for the presence of symptoms potentially associated with Turner Syndrome such as liver, kidney and heart abnormalities. Complete cardiac workup including echocardiogram is done to assess the structure and function of the heart. Thyroid and liver function tests, hypertension screening is done. Children and adults require periodic evaluation for hearing also.


Complications arising out of Turner syndrome

Some of the complications arising out of this syndrome include:

Heart defects or slight abnormality in the heart structure that could increase the risk of serious complications. This could be defects in the main blood vessel leading out of the heart or increased risk of a tear in the inner layer of the aorta.

Women with Turner Syndrome can have increased risk of diabetes and high blood pressure. Hearing loss is also common among girls and women with this syndrome. Gradual loss of nerve function could be the reason for hearing loss in some. Slight abnormalities in the shape of the skull could also increase the risk of frequent middle ear infections.

Kidney problems are seen in one-third of girls with Turner Syndrome who have malformation of kidneys. This could increase pressure and urinary tract infections, although they do not necessarily cause medical problems.

Increased risk of certain immune disorders such as hypothyroidism can be seen in some women with this syndrome. This disorder results in low production of hormones that is important for controlling heart rate, growth and metabolism.

Diabetes, inflammatory Bowel Disease and intolerance to wheat are conditions that can be caused by Turner Syndrome. Poor and abnormal tooth development and greater risk of tooth loss or crowded teeth and poorly aligned bite are complications of this syndrome.

Girls with Turner Syndrome pose risk of increased vision problems, due to weak muscle control of eye movements and farsightedness. Bones are bound to get affected by this syndrome, with increased risk of abnormal curvature of the spine and forward rounding of the upper back. Osteoporosis is another common risk of this syndrome.


Though most women with this syndrome are infertile, a small number do get pregnant spontaneously, and others become pregnant with fertility treatment. But, there are instances where women with this syndrome are likely to experience failure of the ovaries and subsequent infertility very early in adulthood. A cardiologist intervention is essential before pregnancy as they are at increased risk of aortic dissection during pregnancy. They are also at increased risk of high blood pressure and gestational diabetes during pregnancy.

Some girls and women do have psychological issues due to Turner Syndrome with disabilities in math and spatial concepts, difficulties in social situations and increased risk of attention-deficit/hyperactivity disorder.


Treatment and medication

Since chromosomal abnormality causes this syndrome, as such there is no specific cure. However, researchers have developed a number of treatments that can help with growth problems. Growth hormone therapy is recommended for most girls with this syndrome. This is done to increase height as much as possible at appropriate times during childhood and teen years. Growth hormone is given by way of injections several times a week and if the height is really short, doctors recommend androgens in addition to growth hormone.


Estrogen therapy is administered in order to begin puberty and achieve adult sexual development. Estrogen is also given along with growth hormone. Estrogen therapy usually continues throughout life until average age of menopause.

In case of some women with Turner Syndrome, they can become pregnant with donation of an egg or embryo. A specially designed hormone therapy is necessary to prepare the uterus for pregnancy. And pregnancy can be high-risk with Turner Syndrome.


Management of Turner syndrome

Those affected are advised regular checkups which can improve the quality and length of life. Periodic checkups for hearing loss, eye problems, high blood pressure and diabetes and osteoporosis are imperative. Follow-up with a heart specialist is essential as are regular ultrasounds of the heart. Healthy lifestyle habits such as maintaining proper weight and exercising regularly are important throughout life.

And, although girls with Turner syndrome exhibit learning disabilities, most can attend school regularly, write well, learn by hearing, can memorize and develop reasonably good language skills.


Tips for those with Turner syndrome


  • Stay active in sports or hobbies.
  • Consider some voluntary work. Helping others can boost your self-esteem.
  • Talk to a professional therapist.
  • Discuss your problems with your parents if you think they can help.
  • Talk to your school counselor in case of any particular problem.
  • Record your feelings in a journal or diary about the challenges you are coping with.

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Collection of Pages - Last revised Date: November 12, 2019