### over-diagnosed disease:

Hypothyroidism
* affects all cells in the body and the symptoms tend to worsen over time
  - many systems in the body
* also causes proximal muscle weakness.
* can also cause fatigue
  - lead to menstrual irregularity and infertility in women
  - occur if a person has the thyroid removed due to surgery
  - result in immune deficiency
* can be a problem, but can be treated with medication
  - progressive disease, requiring dosage increases over time
  - due to glandular failure or to failure of the pituitary gland
  - primary or secondary
  - primary, secondary and tertiary
  - begin and progress slowly
* can cause annovulation and miscarriage
  - dullness, lethargy and aggression
  - hair loss
  - menstrual disorders if it develops in people of a younger age group
  - obstructive sleep apnea
  - effect hemostasis, or the ability to control bleeding
* can occur at any time from infancy through adulthood
  - due to many causes
  - in anyone
  - spontaneously, or it can develop after treatment for hyperthyroidism
* causes a slowing down of the body's metabolism.
* comes in several varieties.
* common complication in laryngeal paralysis cases
  - disease of middle age and older dogs
  - endocrine disease affecting dogs
* condition common to several different breeds
  - due to the deficiency of thyroid hormone secretion
  - found throughout the world and is associated with low iodine intakes
  - in which the levels of thyroid hormones in the blood are very low
  - resulting from under-activity of the thyroid gland
  - that results from an underactive thyroid
* conditon in which the thyroid gland is underactive.
* decreases and hyperthyroidism increases the sensitivity to oral anticoagulants.
* disorder affecting the thyroid
* genetic disease and is thought to be an autosomal recessive disorder.
* has a myriad of physical symptoms.
* improves the stress response and modifies anxiety behavior in rats.
* increases serotonin turnover and sympathetic activity in the adult rat.
* induces fos-like immunoreactivity in ventral medullary neurons that synthesize trh.
* inhibits the onset of puberty and delays menstrual periods.
* involves the production of too little thyroid hormone.
* is adenosis
  - an over-diagnosed disease
* is another cause of obesity and weight problems
  - possible cause of dwarfism that can be treated through hormonal therapy
  - at least twice as common in women as it is in men
  - characterized by lethargy, weight gain, and drowsiness
  - diseases
  - more common in diabetics as well as females and present as hypothermia
* is more common than an overactive thyroid, and it becomes more common with age
  - hyperthyroidism, especially among older women
  - most commonly due to an autoimmune mechanism
* is one of the most common causes of memory impairment
  - endocrine diseases seen by primary care physicians
  - probably more common
  - rare after therapy
  - reported to cause depigmentation occasionally
* is the cause of many of the skin problems seen by veterinarians
  - insufficient synthesis of the thyroid hormone
  - more common disorder and can occur at any time
* is the most common endocrine disease in dogs
  - of the dog
  - endrocine disease affecting dogs
* is the most common thyroid condition
  - number one inherited disease of dogs in general
  - result from any condition that results in thyroid hormone deficiency
  - too little hormone
  - treatable with medication
* is treated by giving thyroxine tablets
  - thyroid replacement therapy
* is treated with drugs that replace thyroid hormones
  - medication, in tablet form, as prescribed by the doctor
  - oral doses of synthetic or natural hormone
  - underproduction or ineffectiveness of thyroid hormones
  - unusual following radioactive iodine therapy
  - very rare in cats, especially naturally occuring cases
* lack or deficiency of thyroid hormone.
* occurs when the gland stops functioning and producing thyroid hormone
  - thyroid gland fails to produce enough thyroid hormones
* often produces muscle stiffness, muscle hypertrophy and aching.
* potential cause of a decreased period.
* prolongs mitotic activity in the post-natal mouse brain.
* quagmire also.
* rare cause of hypermagnesemia.
* requires simply the replacement of the missing thyroid hormones.
* results from an inadequate supply of the thyroid hormone, thyroxine
  - the impaired production and secretion of thyroid hormone
* seems to be linked to volatile organic pollutants
  - on the rise in all dogs
* serious condition that is easily treated and resolved.
* usually develops gradually.
* very common cause of miscarriages and infertility.