whats thyroid deficiency?

i think my dog may have it. I posted about the dog shampoo. She shows some symptoms: Hair loss, Hair condition changes, dry skin (dandruff), diarrhea, some climatic sensitivity (she’s always had that though, she’s a Boston :), but I think it’s been getting a little worse, but I just thought that it was because of the hair lose. I don’t know. Do you think she could have it, or is there something that they always have that I didn’t mention.

I’m taking her to the vet this week anyways, and I’ll bring this up, but can someone tell me what the deal is with thyroid deficiency is.

Also: some websites said that once you put your dog on it you can’t take it off. Why is that?

Also: My dog is allergic to protein, or something in it, so she has to have a special Science Diet food. She’s been on that for a loong time. Without it, she barfs everywhere.

no wieght gain at all. she’s otherwise extremely healthy
yes, i’m talking about hypothyroidism
and she has bad cataracts (spelling?) could that be related?


  • pierced_chick123

    This is all I know about thyroid disease
    Thyroid gland is situated in teh neck, on either side of the larynx and upper part of the trachea. The primary hormone produced is thyroxine, or thyroid hormone. Thyroxine acts in all tissues, controlling the metabolism of cells. Too little thyroxine leads to reduced cell metabolism, while excess hormones leads to increased metabolism.

    The thyroid gland is controlled by the pituitary gland, which in turn is controlled by the hypothalamus part of the brain. Low levels of circulating thyroxine stimulates the hypothalamus and pituitary to release more of the controlling hormones, in turn stimulating the thyroid gland to produce more thyroxine. Conversely, high levels of thyroxine "turn off" the hypothalamus and pituitary until thyroxine levels return to normal.

    Iodine is required to manufacture thyroxine. Iodine deficiency leads to inadequate thyroid production and swelling of teh gland known as goiter.


    is a deficiency of thyroxine, either b/c of primary failure of the thyroid gland, a deficiency of iodine, or failure of the hypothalamus or pituitary to control teh thyroid. Most causes occur in dogs with either unknown causes or immune disease attacking the thyroid gland.

    Clincal signs
    increased shedding of hair, brittle hair, hair loss
    seborrhea (dry skin) thin skin
    Susceptibility to skin infections
    lethargy and weakness, lack of energy
    weight gain
    intolerance to cold
    in severe cases, seizures and coma
    nerve dysfunction

    blood test of teh thyroxine levels

    There is also something called Hyperthyroidism but its only found in cats.

  • Shiggles

    The thyroid controls most of the bodies productions it might be that or mange but I doubt it is mange just take her to the vet and see what they say.

  • I think you’re thinking of hypothyroidism, which is usually accompanied by weight gain.
    If your dog does have this, she NEEDS the medication. I’m not one for unnecessary medication, but this is a condition that you will always have to deal with

    You haven’t mentioned weight gain though- it could be her allergy, that affects the skin and coat.


  • Tony IV

    There is a simple and inexpensive test for thyroid function.

  • The thyroid gland stops producing enough thyroid hormone. It may be cancerous, immune related, breed dependent, or age related. A blood test can let you know if she is deficient and since the thyroid gland rarely recovers and starts producing more on it’s own again, it is considered to be a medication taken for life.

  • mangafreak

    Once you start anything on such a strong medical routine the body shuts down production. In order to restart the natural production the animal or human would have to been weened off and in the process that can cause serious problems. Thyroid problems can be caused by idione deficiency all the way up to cancer. The likelihood of it being this is very slim.

    And I agree with above about what happens when the thyroid shuts down

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