I hope you come on here long enough to read all the good wishes being sent your way today. I hope you are having a great day. Happy Birthday ! Shirley

Just wanted to thank Cherryfizz and all the rest of you for the Birthday wishes and also those that left a birthday wish on my facebook page. My hubby took me to breakfast and then wanted to know what was next.I said grocery store then home and work outside. The weather was beauitful and it was a treat to work in the yard. You notice I'm avoiding saying which birthday it was but 70 is just around the corner awwwww it just cant be!!!! Maybe I will take after my mother and live to be 100!!! You all would have to put up with me for thirty more years. Thanks again for thinking of me and I was so surprised to see all the notes hugs for you all and I wish you the luck of the Irish

Thanks for asking, Lydia1959! Sjerin told me you inquired (thanks!) I have been working temp and have also been really busy trying to reorganize my house. Things are progressing. I got an unbelievable bargain on ground chuck so I spent 2 1/2 days cooking it up and freezing it which is good because I start another assignment on Monday. Don't know how long it'll last and it may be busy as I'll be transcribing and taking care of Cardiology patients. Thanks for asking! Will try to post again as soon as possible. I feel bad as I can't read and answer all the posts so it's easier not to come to the KT, but anyone can always email me privately. I also have a deadline coming up to have my house like I want it, so I'll be back as soon as I can! Miss chatting about Survivor and Idol! :)

Based upon what Prarie love wrote, at least some people do believe that hypothyroid-induced seizures are common. Being hypothyroid and having seizures are not necessarily related, though they certainly can be. Unfortunately being that most animals do not get regular annual (twice yearly for older pets) bloodwork when they are healthy, but most people will get bloodwork done when their pet has a seizure, it is often the case that low T4 is discovered right after an animal has a seizure. But the seizure itself can cause low T4, and once the animal's seizures are controlled the T4 returns to normal- or not if the animal is on phenobarbital. This is euthyroid sick syndrome- normally functioning thyroid that is temporarily suppressed due to another disease. Euthyroid sick syndrome can be caused by any disease, including a disease that causes seizures or the seizures themselves. It doesn't hurt to judiciously supplement thyroid hormone in an emergency while waiting for a full thyroid panel, which takes 1-2 weeks (having just gotten one for my dog) as long as you don't go overboard, as oversupplementing thyroid hormone can be cardiotoxic. But you are not really controlling the seizures, you are actually preventing further seizures. In other words, even if a dog's seizures are caused by hypothyroidism, giving thyroid hormone won't do anything to stop the current seizures (explaination follows). The full thyroid panel can sort out euthyroid sick syndrome from true hypothyroidism if it is done prior to starting phenobarb, usually. Some pets refuse to be classified, like my own dog. I did a LOT of reading on this lately because my pathologists were stumped when I asked how hypothyroidism, which causes decreased cellular activity, could possibly cause seziures, which are caused by increased cellular activity. I would have asked the neurologists, but they were in rounds and then left before I could catch them. But I did find the info myself, and it seems that hyperlipidemia (VERY high serum triglycerides and/or cholesterol) may lead to atherosclerosis and then ischemic encephalopathy (low oxygen to the brain) due to hemorrhage or thrombus, causing seizures or other CNS signs (called a stroke in people). There are many causes for hyperlipidemia, hypothyroidism is one. One study showed that dogs that had atherosclerosis were 51 times more likely to be hypothyroid than dogs who did not have artherosclerosis (they showed similar results for dogs with diabetes mellitus). Hyperlipidemia may also cause hypercoagulable syndrome where an animal throws clots, which can end up anywhere. Clinical signs are referrable to location of clot, so if a dog threw a clot into the brain, that would also cause ischemic encephalopathy and possible CNS signs or seizures. Of course, bloodwork would pick up hyperlipidemia (well, a complete panel would show both cholesterol and triglyceride levels; some in-house machines can't do this), so waiting for a thyroid panel just tells you why the hyperlipidemia is present. Because hyperlipidemia may have causes besides hypothyroidism, it is much more important to include cholesterol and triglycerides in a seizure work-up than to include thyroid testing. You can always go back for a cause of hyperlipidemia if needed. That said, you need to have a full thyroid panel done before a pet is placed on phenobarbital because that drug suppresses thyroid hormone in some animals. It does not always cause clinical disease and may not always need to be treated. Once on phenobarb, it is very difficult to impossible to sort out true hypothyroidism from phenobarb-induced thyroid suppression. Without clinical signs though, there doesn't seem to be a need for treatment. Atherosclerosis appears to be rare in dogs overall, but common in dogs with hypothyroidism and diabetes mellitus. The actual incidence is unknown because you need either MRI, CT, or a necropsy to diagnose it. Most people don't have access to MRI or CT for their pets either because of expense or because it isn't available. And most people refuse necropsy. The unfortunate part about atherosclerosis is that once it is in the brain, you can't get rid of it, even by treating the underlying cause. If you can get the animal to stop having seizures and if there isn't too much permanent damage and if you can treat the underlying cause, you may be able to prevent more seizures depending upon how much of the brain is affected by atherosclerosis. The damage is done, and you have to prevent further atherosclerosis by treating the disease. In some cases, the damage to the brain may be too great and the patient dies despite best efforts, even if the cause was "just" hypothyroidism. Controlling hypothyroidism would also prevent further seizures due to hypercoagulable states caused by hyperlipidemia, but the same "ifs" apply. This is why supplementing thyroid hormone when presented with a seizuring animal isn't really necessary, even if the seizures are caused by hypothyroidism. You do need to control the hypothyroidism, but that can wait until the animal stops seizing and you have at least a clue of whether or not the animal is actually hypothyroid. It appears that the reason hypothyroidism is a rare cause of seizures in dogs is that most cases of hypothyroidism are diagnosed and treated long before a patient develops clincally significant hyperlipidemia and subsequent atherosclerosis. It seems that mild hypothyroidism without clinical signs does not cause the a high degree of hyperlipidemia, so the risk of seizures in this case is very small. I guess if you ignore the clinical signs long enough and don't do screening bloodwork on a regular basis, a dog could have severe hypothyroidism and seizures. BTW, collies are prone to hyperlipidemia without hypothyroidism, so in the case of poor Shelby, testing cholesterol and triglycerides is much more important than thyroid testing. You have to know what is common in certain breeds and ages, otherwise you end up running every test in the book and that is a waste of time, money, and effort.