This actually happened to me once after I used a whitening toothpaste.
It was an Oral B brand and suddenly my teeth became so sensitive - very painful.
I always see the ads on TV and up until that time, I had no idea what this even meant.
Once I stopped using it, this went away and I have not had it since. Would not be nice to always have this condition.
All the time all the time, I manage it though, I don't eat super cold or very hot food and drinks so therefore not making a problem for me... don't like that sensitive toothpaste flavour but seem to be okay with everyday toothpaste....
Yes - only a few of my teeth are sensitive (and only sometimes). Since I switched to a natural toothpaste and started working with a holistic tooth care coach on nutrition and supplements and general health I don't have the problem as much.