Hi there,
riding a falling horse can be extremely dangerous, therefore I would
recommend to get a specific examination as soon as possible.
I have a friend, who's horse was diagnosed with narcolepsia <sp?>, means
the poor guy will fall down on his knees eventually as if fallen asleep out
of a sudden, either in the pasture or even being ridden!!
As far as I know it is not clear what causes this disease or if it is a
problem of inheritage, best might be to get the horse examined and talk to
the vet...
Good luck,
Katja
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