If we are dealing with TNS with Jack, it has definitely been overlooked. Many of the symptoms of HOD mimic those of TNS.
Right now Jack is back to 'normal.' This is the way it always is. He is sick with a fever and other symptoms for 3-5 days and then He is back to his border collie ways. He will probably get sick again in 3-5 weeks (even on antibiotics and steroids).
We will keep everyone posted when we find out more about Jack's condition and what the breeder finds out.
Yeah, that's what we had with our TNS pups, although it started when they were tiny, presumed to be the unlucky runts who didn't get adequate colostrum for a novice mum. They also had a bad reaction to vaccinations (big lumps at the site). While they initially recovered completely, by the time they were 4monthish they hadn't recovered from the last issue before the new one struck, and were starting to look a bit worse for wear. It tended to be different things each time, so first it was 'gastro', with diarrhoea, then a respiratory infection, then a swollen joint and lameness, etc.
It was about 4 week cycles, from memory, and I was initially looking at cyclic neutropenia (gray collie syndrome) as a possible cause- it's usually shorter cycles, 10-12 days. There's a gene test for this in Collies, but I'm not sure if it is related to TNS.
I found this article interesting:UK 'Grey Collie'
It was diagnosed as cyclic neutropenia in a farm-bred UK smooth coat border collie, but since she had three week cycles rather than the usual short GCS cycles, I wonder if it was TNS. She survived for almost 3 years.