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angieh's Avatar
Catsey Veteran
 
Cats owned: Magnificent moggies
Join Date: Oct 2007
Location: Hampshire, UK
Posts: 21,718
17-12-2007, 03:51 PM   #1

Feline Hyperthyroidism


Two useful links about this disease in cats that seems to be on the increase:-
http://www.thyroid-info.com/articles/cat-hyper.htm
http://www.yorkcats.org.uk/thyroid.htm

This link has more detailed scientific information:-
http://www.gcvs.com/imaging/feline_hyperthyroidism.htm

The piece of information from the article above that worried me most was

"While most cats with hyperthyroidism are diagnosed based on clinical signs and increased T3 or T4 values, up to 42% of cats that are proven to be hyperthyroid will have T3 and/or T4 values that are in the normal range. It has been shown that circulating levels of thyroid hormone can fluctuate up to 24% during any 24 hour period and up to 28% over a 2 week period. Thus if a cat is mildly hyperthyroid, a single T4 assay may fall within the normal range at any time. Also, the circulating thyroid levels may be falsely decreased secondary to many other concurrent disease processes (the "euthyroid sick syndrome"). Therefore, the diagnosis of feline hyperthyroidism should not be excluded based on a single normal serum T3 or T4 value. diagnosis of feline hyperthyroidism should not be excluded based on a single normal serum T3 or T4 value."

I understand that there is a better way of diagnosing hyperthyroidism but it involves "in patient" treatment with radioactive iodine.

I expect that some Catsey members will have come across this problem before and I would welcome any comments you have.





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Catsey Senior
 
Cats owned: torty
Join Date: Sep 2005
Location: bristol u/k
Posts: 423
John is Male
17-12-2007, 05:43 PM   #2

Re: Feline Hyperthyroidism


My Millie has Hyperthyroidism I give her one tablet a day of 2.5mg flimmisol ,, < if i have spelt it right >.she is 12 years old and has turned back into a kitten cat.



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angieh's Avatar
Catsey Veteran
 
Cats owned: Magnificent moggies
Join Date: Oct 2007
Location: Hampshire, UK
Posts: 21,718
19-12-2007, 04:55 PM   #3

Re: Feline Hyperthyroidism


Hi John - so nice to hear that Millie is well on her meds. Can you (I know this may be indelicate) give me any idea on how much you are charged for the flimmisol?

I am sorry that more Catsey members have not commented on my original post - probably all far too busy with Christmas, and rightly so!



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Kay's Avatar
Kay Kay is offline
Catsey Veteran
 
Cats owned: 19 Persians, 2 Oriental SHs
Join Date: Dec 2005
Location: Anglesey, Wales
Posts: 4,419
21-12-2007, 04:54 PM   #4

Re: Feline Hyperthyroidism


Very interesting links Angie. I don't have any experience of this myself but found it interesting reading.



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yola's Avatar
Catsey Veteran
 
Cats owned: 1 Persian and one b/w moo-cat mog
Join Date: Oct 2005
Location: Reading, Berkshire, UK
Posts: 12,771
21-12-2007, 05:06 PM   #5

Re: Feline Hyperthyroidism


Angie, I did scan your post and the articles a while back - sorry for not replying, time mostly is not my own!

I'm still not happy with Balie - his behaviour had changed recently, but after reading this, I don't think this it's hyperthyroidism.



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