Fathomless health's problem Health

Hello,
I have an iw female of 5 years old.
From about 2 years she has these syntoms every six month:
- trembling
- falling over
- wheeze
These syntoms have period of about 10 minutes.
I have checked several times shunt, heart, blood, urine and it'is all ok.
She hasn't neurological problems.
Glycemia and electrolytes are good.
It isn't epilepsy.
Can anyone help me , please ?
Thanks in advance, bye.

Do her eyes 'twitch' at all during the episodes?

I know very little about IW's but has she been DNA tested for "Startles" disease (Hyperekplexia) which is a genetic disorder particular to the breed?

No twitch, i saw frightened eyes.
Thanks

Is she spayed and, if not, does it occur at the same time in relation to her season

No she isn't tested for hyperekplexia but she did a lot of neurological visit in the best italian clinics. Results were all negative.

She has always a 'tic' to the legs behind. I try to upload a video. you can see it
Bye

She isn't spayed, no near her season