Exercise Intolerance

Hi Everyone,

I have a 1 1/2 year old corgi, happy healthy and FIT. He developed a condition about 5 months ago where he can only play for 5 to 10 minutes then he overheats (temp often reaching 105+) and he has collapsed on a few occasions. Wondering if anybody has ever seen or heard of this in their corgis or somebody they know of? We've done THOUSANDS of dollars in testss and have NO ANSWERS! I'd love to know of any thoughts if any of you have had experience with something like this.

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Permalink Reply by Sam Tsang on September 23, 2010 at 2:06pm

Hi Melissa, have your vet already ruled out Malignant Hyperthermia?

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Permalink Reply by Melissa and Franklin! on September 23, 2010 at 2:25pm

part of malignant hyperthermia is an intolerance to anesthetic and he has done fine in all his procedures (has actually been under 3 times since he started having these issues). He also tends to have a decreased heart rate under anesthetic instead of increased so they don't think its MH. Good thought though! Thanks.

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Permalink Reply by Sam Tsang on September 23, 2010 at 3:12pm

ic, was Frank's thyroid level within range? Repeated upper respiratory infection? Hypothalamic lesions or tumors?

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Permalink Reply by Jennifer Markley on September 23, 2010 at 3:40pm

There is an auto-immune condition that causes these kind of symptoms, but I can't remember right now what it is. It involves the thymus gland I believe. Let me do some research and I'll get back to you....

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Permalink Reply by Jennifer Markley on September 23, 2010 at 3:43pm

Myasthenia gravis is the name of the disease.....

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Permalink Reply by Melissa and Franklin! on September 23, 2010 at 8:01pm

he was tested for Myasthenia gravis and was negative, tested negative for Addison's Disease, blood tests all normal (he's had about 4 or 5 now), cardiac ultrasound was normal, DNA test for Excercise Induced Collapse (a condition most common in labs) was negative. He's never had any upper respiratory infections. I went to a new internist on Tuesday and she did muscle biopsies so we will see what happens with that. I was just wondering if ANYBODY has ever had this type of experience with their corgis?