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Chronic/Pain Conditions  >>    Thyroid Health

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In this video, Dr. Huntoon asnwers the most important question to consider regarding your health: "Is having a symptom ever normal?"

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Thyroid Health Problems

The thyroid gland is located on the front part of the neck below the thyroid cartilage (Adam's apple). The gland produces thyroid hormones, which regulate body metabolism. Thyroid hormones are important in regulating body energy, the body's use of other hormones and vitamins, and the growth and maturation of body tissues.

Diseases of the thyroid gland can result in either production of too much (overactive thyroid disease or hyperthyroidism), too little (underactive thyroid disease or hypothyroidism) thyroid hormone, thyroid nodules, and/or goiter. All types of thyroid problems in women are much more common than thyroid problems in men.

Production of thyroid hormones: The process of hormone synthesis begins in a part of the brain called the hypothalamus. The hypothalamus releases thyrotropin-releasing hormone (TRH). The TRH travels through the venous plexus located in the pituitary stalk to the pituitary gland, also in the brain. In response, the pituitary gland then releases thyroid-stimulating hormone (TSH) into the blood. The TSH travels to the thyroid gland and stimulates the thyroid to produce the two thyroid hormones, L-thyroxine (T4) and triiodothyronine (T3). The thyroid gland also needs adequate amounts of dietary iodine to be able to produce T4 and T3.

Regulation of thyroid hormone production: To prevent the overproduction or underproduction of thyroid hormones, the pituitary gland can sense how much hormone is in the blood and adjust the production of hormones accordingly. For example, when there is too much thyroid hormone in the blood, TRH and TSH production are both decreased. The sum effect of this is to decrease the amount of TSH released from the pituitary gland and to reduce production of thyroid hormones from the thyroid gland to restore the amount of thyroid hormone in the blood to normal. Defects in these regulatory pathways may result in hypothyroidism (underactive thyroid problem) or hyperthyroidism (overactive thyroid problem).

Thyroid goiter: Thyroid goiter is any enlargement of the thyroid that can occur with hyperthyroidism or hypothyroidism but also with benign and malignant (cancerous) nodules. Worldwide, the most common cause of goiter is iodine deficiency. Although it used to be very common in the U.S., it is now less common with the use of iodized salt. Multiple nodules in the thyroid are very common, but only about 5% of the nodules are a thyroid cancer. Thyroid cancer is diagnosed after a thyroid ultrasound exam and a needle aspiration biopsy of the nodule.

HYPOTHYROIDISM IN PREGNANCY
Newly diagnosed hypothyroidism in pregnancy is rare because most women with untreated hypothyroidism do not ovulate or produce mature eggs in a regular manner, which makes it difficult for them to conceive.

It is a difficult new diagnosis to make based on clinical observation. The signs and symptoms of hypothyroidism (fatigue, poor attention span, weight gain, numbness, and tingling of the hands or feet) are also prominent symptoms of a normal pregnancy.

Undiagnosed hypothyroidism during pregnancy increases the chance of stillbirth or growth retardation of the fetus. It also increases the chance that the mother may experience complications of pregnancy such as anemia, eclampsia, and placental abruption.

Probably the largest group of women who will have hypothyroidism during pregnancy are those who are currently on thyroid hormone replacement. The ideal thyroxine replacement dose (for example, levothyroxine [Synthroid, Levoxyl, Levothroid, Unithroid]) during pregnancy may rise by 25% to 50% during pregnancy. It is important to have regular checks of T4 and TSH blood levels as soon as pregnancy is confirmed; and frequently through the first 20 weeks of pregnancy to make sure the woman is taking the correct medication dose.

HYPERTHYROIDISM IN PREGNANCY
Newly diagnosed hyperthyroidism occurs in about 1 in 2,000 pregnancies. Grave's disease accounts for 95% of cases of hyperthyroidism newly diagnosed during pregnancy.

As with hypothyroidism, many symptoms of mild hyperthyroidism mimic those of normal pregnancy. However, anyone experiencing symptoms such as significant weight loss, vomiting, increased blood pressure, or persistently fast heart rate should have blood tests to evaluate whether hyperthyroidism is present.

Untreated hyperthyroidism does cause fetal and maternal complications including poor weight gain and tachycardia (an abnormally fast heart rate).

Treatment of hyperthyroidism during pregnancy is primarily medical. Propylthiouracil or methimazole (Tapazole) are the usual first-line agents to block the synthesis of thyroid hormone. They appear to be equally effective and have the same rate of side effects. The rate of side effects of each medication is not increased in pregnancy.

Iodine will cross the placenta, so its use in either a thyroid scan or in treatment with radioactive iodine is prohibited in pregnancy.

One positive note for women with hyperthyroidism is that those with Grave's disease or Hashimoto's thyroiditis may have improvement in their symptoms during pregnancy.

GOITER IN PREGNANCY
It is common for a goiter to enlarge slightly during pregnancy. It is more common when the mother lives in an area of iodine deficiency. In the United States, the average intake of iodine is adequate but can be low if someone avoids consumption of milk, eggs, and iodized salt. Not all prenatal vitamins contain iodine, but it is recommended that only prenatal vitamins that contain iodine should be used during pregnancy.

POSTPARTUM THYROID DISEASE
Some women may have thyroiditis that usually occurs within 3 to 6 months after giving birth. It also may occur after miscarriage. The classic clinical picture is a woman who will first have symptoms of hyperthyroidism, followed by hypothyroidism, culminating in normal thyroid function.

Women with type I diabetes have a 25% risk of developing postpartum thyroid dysfunction.

Consult your doctor if you have symptoms of hypothyroidism or hyperthyroidism after pregnancy or miscarriage.

Symptoms

THYROID PROBLEMS SYMPTOMS
HYPOTHYROIDISM (LOW THYROID HORMONE LEVEL) SIGNS AND SYMPTOMS
Symptoms of hypothyroidism in infants can include:
Constipation
Poor feeding
Poor growth
Jaundice (yellow discoloration of the skin and eyes)
Excessive tiredness

Symptoms of hypothyroidism in children include:
Symptoms similar to adult symptoms
Excessive fatigue
Poor growth
Poor school performance

Symptoms of hypothyroidism in adults include:
Early symptoms
Easy fatigue, exhaustion
Poor tolerance to cold temperatures
Constipation
Carpal tunnel syndrome (pain at the wrists and numbness of the hands)
Later symptoms
Poor appetite
Weight gain
Dry skin
Hair loss
Intellectual ability worsens
Deeper, hoarse voice
Puffiness around the eyes
Depression
Irregular menstrual periods or lack of menstrual periods

HYPERTHYROIDISM (OVERACTIVE THYROID) SIGNS AND SYMPTOMS

Symptoms of hyperthyroidism in children include:
Symptoms similar to adult symptoms
Declining school performance
Behavior problems

Symptoms of hyperthyroidism in adults include:
Insomnia
Hand tremors
Nervousness
Feeling excessively hot in normal or cold temperatures
Frequent bowel movements
Losing weight despite normal or increased appetite
Excessive sweating
Menstrual period becomes scant, or ceases altogether
Joint pains
Difficulty concentrating
Eyes seem to be enlarging

Symptoms of hyperthyroidism in the elderly may cause:
Worsening of angina (chest pain) in persons with heart disease
Worsening of shortness of breath in persons with heart failure
Muscle weakness, especially in the shoulders and thighs

THYROID NODULES AND GOITER SIGNS AND SYMPTOMS

The only sign of goiter or nodule is an enlargement in the lower part of the front part of the neck. This enlargement is often not painful or bothersome.

When the nodule or goiter becomes large, there can be pressure on the surrounding normal structures in the neck including the esophagus (swallowing tube), trachea (breathing tube) and the blood vessels that bring blood to and from the head. A common symptom is feeling a constant pressure in the front of the neck that is worse when the head is tilted down. This pressure on the breathing tube (trachea) may cause a small, dry cough that can be constant and worsens when lying down. The pressure on the swallowing tube (esophagus) may be noticed as difficulty in swallowing large pills or dry food such as bread and rice with the food "getting stuck" in the lower part of the front of the neck. Rarely, this pressure can damage the nerve that controls the voice box, causing hoarseness of the voice.

 

 

Causes

Hypothyroidism Causes

Loss of thyroid tissue: Treatment of hyperthyroidism by radioactive destruction of thyroid tissue or surgical removal of thyroid tissue can result in hypothyroidism.

Antithyroid antibodies: These may be present in people who have diabetes, lupus, rheumatoid arthritis, chronic hepatitis, or Sjogren's syndrome. These antibodies may cause decreased production of thyroid hormones.

Congenital: Hypothyroidism can be present from birth. This is commonly discovered early with nationwide newborn screening for this disease.

Defects in the production of thyroid hormone: Hashimoto's thyroiditis occurs when there are defects in the production of thyroid hormone, resulting in an increased amount of TSH. The increased TSH results in a goiter (enlargement of the thyroid gland itself that can be seen as an obvious swelling in the front of the neck).

Medications: Some medications, particularly lithium (Eskalith, Lithobid), may cause a drug-induced hypothyroidism.

Hyperthyroidism Causes

Grave's disease: This thyroid condition results from abnormal stimulation of the thyroid gland by a material in the blood termed the thyroid stimulating immunoglobulin (TSI). TSI overstimulates the thyroid causing a goiter. It also causes Grave's eye disease, including a "bug-eyed" look and "frightened stare." This can progress to severe eye pain or eye muscle weakness causing tearing and double vision. It also causes raised, thickened skin over the shins or tops of the feet.

Toxic multinodular goiter: This occurs when part of the thyroid gland produces thyroid hormones all by itself, without regard to TSH stimulation. It usually occurs in people with a long-standing goiter, usually in the elderly. Toxic multinodular goiter is different from Grave's disease because of the general lack of eye complications and less severe signs of hyperthyroidism.

Thyroiditis: This inflammatory disorder of the thyroid gland includes such conditions as de Quervain's thyroiditis or Hashimoto's thyroiditis. In these conditions, you may have periods of increased thyroid hormone release due to the inflammation, causing a hyperthyroid state. As thyroid failure occurs due to the inflammatory response, hypothyroidism may occur.

Pituitary adenoma: This tumor of the pituitary gland causes independent TSH production leading to overstimulation of the thyroid gland.

Drug-induced hyperthyroidism: This is most commonly caused the heart medication amiodarone (Cordarone). It may be prevented by monitoring this possible side effect and weighing them against the benefits of using this heart medication.

Goiter or Nodules Causes

Most of the time thyroid nodules and thyroid goiters do not cause any symptoms. Some goiters are found because of the thyroid hormone overproduction or underproduction from the thyroid gland. Some nodules are found because a patient or doctor sees or feels a lump in the neck

Nodular or multinodular goiter: This is a condition in which multiple nodules form in the thyroid. There are only two conditions that cause thyroid enlargement and nodules: 1) external radiation exposure, or 2) iodine deficiency. Often several members of a family will have an enlarged goiter as the condition can be inherited

Thyroid cancer: There are several types of thyroid cancer. The most common type, papillary thyroid carcinoma, occurs in more than 85% of cases. This type of cancer can be caused by radiation exposure as a child or adolescent, including therapeutic radiation used in the treatment of cancers or in accidents such as the Chernobyl nuclear disaster.

Traditional Medical Treatment Options and Diagnosis

Medications for Hyperthyroidism

As with all medications, side-effects and complications occur. Discussing what to expect and what to look for with your Medical Doctor or Pharmacist is vital before beginning any medication. Understanding the time-frame and the process of getting off the medication, if necessary, as well as the prognosis is vital before beginning any medication regime.

The following are the main medications used in Thyroid Problems:

Beta-blockers: This class of medication works by blocking many of the body's responses to hyperthyroidism. It decreases tremor, nervousness, and agitation. It also reduces the fast heart rate. Beta blocker tablets are prescribed to a patient with mild to moderate symptoms of hyperthyroidism, and as an IV preparation to the person with the severe form of hyperthyroidism (thyrotoxic crisis).

Propylthiouracil: This antithyroid drug works by blocking thyroid hormone synthesis. It takes several months after starting the medication for the full therapeutic effect to be achieved. Common mild side effects include an itchy rash. More rare, serious side effects include a decrease in white blood cell count, which can decrease the ability to fight off infection. Therefore, a high fever should prompt a call to the doctor. This medication can rarely cause liver dysfunction.

Methimazole (Tapazole): This antithyroid drug also works by blocking thyroid hormone synthesis. It may take slightly longer than propylthiouracil to achieve its full effect. It has similar side effects as propylthiouracil.

Iodide (Lugol's solution, Strong iodine): This medication works by inhibiting the release of thyroid hormone from the over-functioning thyroid gland. It must be used in conjunction with an anti-thyroid drug because the iodine can be used to increase the amount of thyroid hormone produced and worsen the hyperthyroidism. Common side effects include nausea and a metallic taste in the mouth.

Radioactive iodine therapy: An endocrinologist or nuclear medicine specialist can treat overactive thyroid conditions with radioactive iodine swallow. This is generally a different type of radioactive iodine than used for diagnostic scans. This treatment takes several months to work by scarring down the thyroid gland, resulting in a smaller- sized gland, often accompanied by hypothyroidism.

Medications for Hypothyroidism

L-thyroxine (Synthroid, Levoxyl, Levothroid, Unithroid): This medication is the mainstay of thyroid hormone replacement therapy in hypothyroidism. This is a synthetic form of thyroxine. This is exactly the same hormone that the thyroid makes. The body tissues convert it to the active product L-triiodothyronine. Side effects are rare, and it has an excellent safety record.

L-triiodothyronine: This is rarely used alone as thyroid hormone replacement, because it has a much shorter persistence in the blood than L-thyroxine. Its use can cause rapid increases in L-triiodothyronine concentration, which can be dangerous in the elderly and in people with cardiac disease. It may be used in combination with L-thyroxine for people who have poor symptomatic relief with L-thyroxine alone.

Thyroid extract or "natural" thyroid hormone: This is dried and powdered pig thyroid gland. The hormone is not purified and the exact amount of T4 and T3 can be variable. This is not recommended as a thyroid hormone replacement. There is an excess of T3 in this preparation.

Medications for Thyroid Nodules and Goiter
If the thyroid function is abnormally high or low, then the treatments are as described above.

If the thyroid function is normal with thyroid nodules, there are no good medical treatments to shrink the nodules. Many years ago it was standard of care to give levothyroxine to "shrink" nodules, but it was found after careful research that administration of thyroid hormone rarely shrinks large nodules.

An emerging treatment of nontoxic goiters/nodules is radioactive iodine therapy. This therapy is used commonly in Europe and South America but is not yet commonly used in all patients in the United States. This treatment is considered when a patient has a large goiter and there are medical problems that prevent a surgical treatment.

Surgery
Surgery for hyperthyroidism (thyroidectomy), large thyroid nodules, or nontoxic goiters may involve removal of much of the thyroid tissue, leaving some intact to continue to produce thyroid hormone. Risks of this procedure include damage to the nerves that control the vocal cords, damage to the parathyroid glands, which lie just behind the thyroid gland, and bleeding. Hypothyroidism may also occur, but occurs less frequently than with radioactive iodine treatment. Persistent hyperthyroidism may also occur. If so, the entire thyroid gland is removed. In general, in the hands of an experienced surgeon, this is considered an effective and relatively safe procedure.

About 70% of patients who retain half of their thyroid gland will continue with normal thyroid function after the surgery. Those patients who have the entire thyroid removed must take thyroid hormone for the rest of their lives. Patients with thyroid cancer will need special treatments and scans with radioactive iodine. Most patients with thyroid cancer are managed by endocrinologists and not oncologists.

Follow-up
Anyone diagnosed with Grave's disease should stop smoking immediately because smoking increases the risk of progression to Grave's eye disease.

Follow the medication schedule prescribed by your health care practitioner. Ask your doctor or pharmacists what side effects the medications may cause. Also discuss with your doctor the kinds of symptoms that would prompt a call to the doctor or a visit to the emergency department

Medicines Two Choices for You

Dr. Huntoon's Alternative Medical Treatment Options

Having this condition is not fun at all. Being motivated to look for non-conventional forms of treatment is warranted. Working with a Holistic Chiropractor does offer specific benefits. Using a well-rounded, multifaceted approach to address all the causes and imbalances within the person and discussing what is involved as well as the time commitment necessary to having a full recovery is necessary. This has demonstrated positive results when sticking to a specific treatment plan. Others have benefited by using Acupuncture, Homeopathy or Naturopathy when following the treatment guidelines set up by your practitioner.

What to discuss with your doctor

WHEN TO SEEK MEDICAL CARE

The signs and symptoms of hypothyroidism and hyperthyroidism typically develop slowly over a period of weeks to months. If an individual has prolonged symptoms or signs of either condition, call a doctor to be evaluated.

Untreated hypothyroidism may have severe effects on the brain as well as cause intestinal obstruction and inability of the heart to beat effectively. An infection, exposure to cold, trauma, and certain medications may often cause a worsening of hypothyroidism.

Seek immediate attention at a hospital's emergency department if you have these signs and symptoms associated with thyroid problems.
Shortness of breath
Abdominal pain
Vomiting
Confusion
Coma

Severe hyperthyroidism, called thyrotoxic crisis (thyroid storm), may be life-threatening because of the effects it has on the heart and brain. It often occurs in people who are untreated or are receiving inadequate treatment for thyroid problems. A severe infection can also cause a thyrotoxic crisis.

Seek immediate attention at a hospital's emergency department if you have these signs and symptoms associated with thyroid problems.
Chest pain
Rapid and/or irregular heartbeat
Shortness of breath
Abdominal pain
Vomiting
Extreme agitation or irritability
Dizziness
Disorientation (person has no knowledge of the date or location)
Coma

Severe goiter or nodule problem: Seek immediate attention at a hospital's emergency department if you have these signs and symptoms associated with thyroid problems. Shortness of breath especially with stridor (a whistling sound in your neck when you breathe)

Extreme pain in your thyroid gland that prevents you from swallowing
Sudden enlargement of your thyroid gland, especially if associated with problems breathing or swallowing
Pain and high fever with the thyroid enlargement

THYROID PROBLEMS DIAGNOSIS
The medical history and physical exam are important parts of the evaluation for thyroid problems. The health care practitioner will focus on eye, skin, cardiac (heart), and neurologic findings.

Blood tests
Thyroid-stimulating hormone (TSH): In most cases, this is the single most useful lab test in diagnosing thyroid disease. When there is an excess of thyroid hormone in the blood, as in hyperthyroidism, the TSH is low. When there is too little thyroid hormone, as in hypothyroidism, the TSH is high.

Free (T4): T4 is one of the thyroid hormones. High T4 may indicate hyperthyroidism. Low T4 may indicate hypothyroidism.

Triiodothyronine (T3): T3 is another one of the thyroid hormones. High T3 may indicate hyperthyroidism. Low T3 may indicate hypothyroidism.

TSH receptor antibody (TSI): This antibody is present in Grave's disease.

Reverse T3 (RT3): This is "Tissue Resistance to Thyroid Hormone."

Antithyroid antibody: This antibody is present in Hashimoto's and Grave's disease.

Nuclear thyroid scan: During this scan a small amount of radioactive iodine is swallowed or a similar material 99m-technetium, is injected into the blood, and then an imaging study of the thyroid is taken that reveals localization of the radioactivity. Increased uptake of the radioactive material in the thyroid gland indicates hyperthyroidism, while decreased uptake is present in hypothyroidism. This test should not be performed on women who are pregnant.

Thyroid ultrasound: Thyroid ultrasound helps to determine the size and number as well as the different types of nodules in the thyroid gland. This exam can also detect if there are enlarged parathyroid glands or lymph nodes near the thyroid gland.

Fine-needle aspiration: During this procedure, a small needle is inserted into the thyroid gland in order to get a sample of thyroid tissue, usually from a nodule. This test can be done in a health care practitioner's office without special preparations. The tissue is then observed under a microscope by a pathologist to look for any signs of cancer.

Computerized axial tomography (CT) scan: A CT scan is occasionally used to look for the extent of a large goiter into the upper chest or to look for narrowing or displacement of the trachea (breathing tube) from the goiter.

Your Solution

Thyroid Problems Prevention

There is no known way to prevent hyperthyroidism or hypothyroidism from a Medical perspective. In the United States, iodine deficiency is quite common and you should be checked to see if you have an iodine deficiency. This is a simple test that requires the application a 2 inch square of iodine solution on your forearm and see how long it takes to disappear. It should take roughly 24 hours for the square to be totally gone. If it takes less than 24 hours for the square to totally disappear, you have an iodine deficiency.

Work closely with your Holistic Chiropractor to begin taking an iodine supplement. Your Holistic Chiropractor, who is well versed in this form of treatment, can help to monitor your progress. By helping you to understand what to look for while being treated, whether it is potential side-effects or improvement is important. Starting iodine supplementation without proper supervision is not recommended as the possible side-effects without proper supervision can be serious.

Prognosis
When working with a Holistic Chiropractor who is well versed in all the causes of Thyroid Disease, being able to keep your thyroid and not to have to be on medication for the rest of your life is possible. Discussing your concerns, expectations and time commitment for your specific thyroid condition is warranted.

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