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Topic: Hyperthyroidism

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  Hyperthyroidism - Wikipedia, the free encyclopedia
Hyperthyroidism (or "overactive thyroid gland") is the clinical syndrome caused by an excess of circulating free thyroxine (T4) or free triiodothyronine (T3), or both.
Surgery (to remove the whole thyroid or a part of it) is not extensively used because most common forms of hyperthyroidism are quite effectively treated by the radioactive iodine method.
In veterinary medicine, hyperthyroidism is one of the most common endocrine conditions affecting older domesticated cats.
en.wikipedia.org /wiki/Hyperthyroidism   (866 words)

 Hyperthyroidism   (Site not responding. Last check: 2007-11-06)
Hyperthyroidism is an imbalance of metabolism caused by overproduction of thyroid hormone.
Hyperthyroidism caused by Graves' disease is usually progressive and has many associated complications, some of which are severe and affect quality of life.
Thyroid crisis or "storm" is an acute worsening or exaggeration of the symptoms of hyperthyroidism that may occur with infection or stress.
www.shands.org /health/information/article/000356.htm   (593 words)

 THE MERCK MANUAL, Sec. 2, Ch. 8, Thyroid Disorders
Iodine ingestion is the major cause of hyperthyroidism with a low thyroid radioactive iodine uptake, considered to be true hyperthyroidism, ie, increased synthesis and release of excess thyroid hormone from the thyroid.
The hyperthyroidism in molar pregnancy, choriocarcinoma, and hyperemesis gravidarum is transient, and normal thyroid function resumes when the molar pregnancy is evacuated, the choriocarcinoma is appropriately treated, or the hyperemesis gravidarum abates.
Iodine is used for the emergency management of thyroid storm, for hyperthyroid patients undergoing emergency nonthyroid surgical treatment, and (since it also decreases the vascularity of the thyroid gland) for the preoperative preparation of hyperthyroid patients undergoing subtotal thyroidectomy.
www.merck.com /pubs/mmanual/section2/chapter8/8d.htm   (3268 words)

 H - Hyperthyroidism   (Site not responding. Last check: 2007-11-06)
Hyperthyroidism is the most common hormonal disease of cats.
Diabetes, kidney disease, liver disease and other conditions that also affect older cats need to be ruled out prior to settling on a diagnosis of hyperthyroidism, even if tests indicate it is present.
Testing for hyperthyroidism is done by measuring the T4 (one thyroid hormone) levels in the blood stream.
www.vetinfo.com /cencyclopedia/cehyperthy.html   (720 words)

 Hyperthyroidism   (Site not responding. Last check: 2007-11-06)
Hyperthyroidism is almost exclusively seen in middle- to old-aged cats, and is rarely seen in cats less than seven years of age.
Most hyperthyroid cats will show some degree of polyphagia (excessive appetite) and restlessness, but in some advanced cases there will be generalised weakness, lethargy and loss of appetite and the signs will be less characteristic.
Care is needed where both these conditions are present, as the hyperthyroidism tends to increase the blood supply to the kidneys, which may improve their function.
www.fabcats.org /hyperthyroidism.html   (2475 words)

If you've been treated for hyperthyroidism or currently are being treated, see your doctor regularly so he or she can monitor your condition.
Hyperthyroidism is diagnosed using your medical history, a physical exam and blood tests.
Hyperthyroidism also places you at risk of thyrotoxic crisis — a sudden intensification of your symptoms, leading to a fever, a rapid pulse and even delirium.
www.cnn.com /HEALTH/library/DS/00344.html   (2178 words)

 Pets with Diabetes: Hyperthyroidism and Diabetes
Hyperthyroidism is the most common endocrine disorder in cats, and is one of the most common diseases of older cats.
Because hyperthyroid cats may have increased stress on their heart, they are usually started on antithyroid medication prior to surgery so the thyroid hormone levels are normal and the effects on the heart are minimized.
Since the hyperthyroidism increased metabolism and had an effect on the diabetes, during the time when his thyroid hormones were returning to normal, we monitored his blood glucose levels to be sure he was not getting too much insulin.
www.petdiabetes.org /hyperthyroid.htm   (1286 words)

Hyperthyroidism is a condition seen in older cats, generally over 12 years of age, in which an excess of thyroid hormone is produced by the body.
The clinical signs of hyperthyroidism are related to the function of the thyroid gland, which regulates body metabolism.
In some hyperthyroid cats, only one of these is elevated, so it is wise to look at both.
www.indianwalkvet.com /hyperthyroid.htm   (991 words)

 MoonDragon's Health & Wellness: Hyperthyroidism
Hyperthyroidism can also lead to osteoporosis, because calcium and other minerals are not sufficiently replaced in the normal process of bone cell turnover.
If you are being treated for hyperthyroidism, your health professional will test your TSH and thyroid hormones several times each year to evaluate how well you are responding to treatment and to check for a worsening of the condition.
Hyperthyroidism may be severe in children and teens, and treatment is not always as effective as in adults.
www.moondragon.org /health/disorders/hyperthyroid.html   (4614 words)

 Hyperthyroidism in Cats
Hyperthyroidism occurs most commonly in middle to old-age cats with a reported range of onset between 4 and 22 years.
Cats with hyperthyroidism that are not treated often develop a heart condition called hypertrophic cardiomyopathy, in which the muscle of the heart becomes excessively thick.
Cats with hyperthyroidism may have slight increases in the number of red blood cells, increased liver enzymes, and increased BUN and creatinine, which measure kidney function.
www.peteducation.com /article.cfm?articleid=218   (1912 words)

 What Is Hyperthyroidism?
Hyperthyroidism is a condition in which there is overproduction of thyroid hormone by the thyroid gland, causing the levels of thyroid hormone in the blood to be too high.
Hyperthyroidism is a medical condition characterized by an abnormally high level of thyroid hormone in the bloodstream.
Hyperthyroid eye disease may cause significant changes in vision along with eyes that bulge or protrude from the face.
www.ehealthmd.com /library/hyperthyroidism/HYE_whatis.html   (1109 words)

Hyperthyroidism means overactivity of the thyroid gland, resulting in too much thyroid hormone in the bloodstream.
Symptoms of Graves' disease are identical to hyperthyroidism, with the addition of three other symptoms.
Hyperthyroidism caused by toxic nodular goiter is a condition in which one or more nodules of the thyroid becomes overactive.
www.healthsystem.virginia.edu /uvahealth/adult_endocrin/hypert.cfm   (425 words)

Hyperthyroidism is a condition caused by the effects of too much thyroid hormone on tissues of the body.
Hyperthyroidism is a disorder in which the thyroid is overactive.
Hyperthyroidism is disturbed by thyme, pine, and peppermint.
www.althealth.co.uk /services/info/ailments/hyperthyroidism1.php   (2318 words)

 The Winn Feline Foundation - Health Article   (Site not responding. Last check: 2007-11-06)
In recent years, it has been recognized that many hyperthyroid cats have concurrent chronic kidney failure that is being masked by the effects of hyperthyroidism.
Since hyperthyroidism induces increases in blood pressure and blood supply to the kidneys, treating the disease will result in a drop in the blood supply to the kidneys.
For hyperthyroid cats that are assessed with normal kidney function, surgery or radioactive iodine treatment are often recommended.
www.winnfelinehealth.org /health/hyperthyroidism.html   (1517 words)

 Hyperthyroid Disease in Cats at ThePetCenter.
Stevens Point, WI Hyperthyroid disease in cats is common and is usually discovered in older cats that lose weight but yet eat well, and seem otherwise healthy.
Hyperthyroidism is one of the most common diseases of the middle-aged and older cats.
Hyperthyroidism is diagnosed by checking levels of the thyroid hormone in the blood.
www.thepetcenter.com /gen/hth.html   (1522 words)

Hyperthyroidism occurs when your thyroid gland, located at the front of your neck, produces too much thyroid hormone.
Hyperthyroidism usually happens between the ages of 20 and 40.
Secondary hyperthyroidism results when a gland called the pituitary overrides the thyroid's normal instructions, and orders it to make too much thyroid hormone.
www.umm.edu /altmed/ConsConditions/Hyperthyroidismcc.html   (1006 words)

 Feline Hyperthyroidism
Apathetic hyperthyroidism represents an unusual form of hyperthyroidism that occurs in approximately 10% of cats with hyperthyroidism.
The clinical signs of hyperthyroidism may vary from extremely mild (in some cases no clinical signs are recognizable) to severe.
Planar thyroid scintigraphy (or thyroid imaging) is useful in the detection of the hyperfunctional thyroid tissue that causes the disease.
www.avmi.net /NewFiles/Hyperthyroidism/Hyperthyroidism.html   (718 words)

It is high in most cases of hyperthyroidism and low in cases where the thyroid is not actively synthesizing hormone, e.g.
Hyperthyroidism is defined as the production of excessive amounts of thyroid hormone by a hyperfunctional thyroid gland.
The autoimmune version of hyperthyroidism (Grave's disease) accounts for 60-90% of cases of hyperthyroidism in different regions of the world.
www.medical-library.net /sites/_hyperthyroidism.html   (427 words)

 eMedicine - Hyperthyroidism : Article by Stephanie L Lee, MD, PhD, FACE
Hyperthyroidism is a subset of thyrotoxicosis (excludes exogenous thyroid hormone intake and subacute thyroiditis) that is caused by excess synthesis and secretion of thyroid hormone by the thyroid.
A typical nuclear scintigraphy scan of a toxic multinodular goiter is shown in Image 1C and demonstrates an enlarged thyroid gland with areas of increased and decreased activity.
Hyperthyroidism from toxic multinodular goiter and toxic adenoma is permanent and usually occurs in adults.
www.emedicine.com /MED/topic1109.htm   (6680 words)

 Herbal Hyperthyroidism Treatment and Natural Thyroid Medications
Hyperthyroidism is a medical condition in which the thyroid gland produces too much thyroid hormone (called T3 and T4).
The diagnosis of hyperthyroidism is easily made by means of a blood test to measure levels of the thyroid hormone (T3 and T4) in the blood.
Mild hyperthyroidism often responds well to complimentary medicine and a holistic approach (including diet) and may help to calm down the thyroid and remove the need for radioactive iodine treatment or surgery.
www.nativeremedies.com /thyrosoothe-improve-thyroid-function.html   (1409 words)

 Hyperthyroidism   (Site not responding. Last check: 2007-11-06)
Hyperthyroidism (over active thyroid gland), is very rare in children and can cause serious problems.
In the newborn infant: If mother-to-be is taking anti-thyroid medications in leu of hyperthyroidism, it is important to know these medications can be passed on to the unborn child, along with the antibodies that cause hyperthyroidism.
Because this disorder is hereditary, if you have a family history of hyperthyroidism, it is a possibility that your child may acquire this disorder at some time in his/her life.
members.tripod.com /~TDmagicmom/hyper.html   (289 words)

Other names for hyperthyroidism, or specific diseases which are the result of an overactive thyroid include Graves’ disease, diffuse toxic goiter, Basedow’s disease, Parry’s disease and thyrotoxicosis.
The annual incidence of hyperthyroidism in the United States is about one per 1,000 women.
Although the exact cause of hyperthyroidism is unknown, it is often associated with autoantibodies in the blood which cause the thyroid to grow and excrete excess thyroid hormone.
www.hmc.psu.edu /healthinfo/h/hyperthyroidism.htm   (866 words)

 Frequently Asked Questions on Graves' Disease & Hyperthyroidism / Thyroid Disease Information Source - Articles/FAQs
Now that you know something about hyperthyroidism, the dangers, the causes, and it's most common forms, in the next part of the series, we'll look at how hyperthyroidism is diagnosed.
Hyperthyroidism caused by an excess of iodine is usually characterized by an abnormal thyroid gland - as in a gland with goiters or a multinodular goiter.
But hyperthyroidism is much more dangerous, and difficult to control, than is hypothyroidism.
www.thyroid-info.com /articles/hyperthyroidism-faq.htm   (3242 words)

 Hyperthyroidism   (Site not responding. Last check: 2007-11-06)
When the thyroid (located in the neck) produces excessive amounts of hormone, the condition is known as hyperthyroidism.
Following an infection or a stressful event such as surgery, people with hyperthyroidism may develop a severe form of the condition called thyroid storm.
Hyperthyroidism can cause diarrhea, which can lead to dehydration---another reason to drink plenty of liquid.
www.healthsquare.com /mc/fgmc2800.htm   (774 words)

 Hyperthyroidism: Signs, Symptoms, Diagnosis, Causes and Treatments of Hyperthyroidism.
Hyperthyroidism is a large topic so we have split it into four manageable sized portions.
Hyperthyroidism is the medical term to describe the signs and symptoms associated with an over production of thyroid hormone.
Although there are several different causes of hyperthyroidism, most of the symptoms that patients experience are the same regardless of the cause (see the list of symptoms below).
www.endocrineweb.com /hyper1.html   (487 words)

 Signs, Symptoms and Diagnosis of Hyperthyroidism - VeterinaryPartner.com - a VIN company!
In this way, a hyperthyroid cat that is sick from another disease might have a T4 in the normal or borderline range but the Equilibrium Dialysis Free T4 would still be high enough to confirm the hyperthyroid condition.
Hyperthyroidism is caused by a benign growth in the thyroid gland that is over-producing T4.
There is a strong correlation between eating canned food and developing hyperthyroidism later in life; in fact, cats who eat only canned foods from "pop-top" type cans have five times the risk of developing hyperthryoidism relative to cats who eat only dry food.
www.veterinarypartner.com /Content.plx?P=A&S=0&C=0&A=516   (848 words)

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