What is wrong with my dog I have a four year old collie cross lurcher she has stopped eating and her nose is very warm she is shaking to and is doing the toilet in the house and now she damaging my wooden doors and hiding in corners with a toy in her mouth crying don't know what to do.

Take the dog to a vet. A warm nose does not necessarily mean she is sick, but I would be concerned over the lack of eating, shaking and the defecating in the home if this is not normal behavior for her.

I agree, this is likely a sign of some illness and/or fever. See the vet asap.

I agree with the above, time for a trip to the vet. If it's nothing medical you know it's behavioral. With all medical concerns out of the way we can better offer advice on behavioral issues.

Is your dog fixed? Mine would do this also she was going through false pregnancy. It is a hormonal problem and can kill your dog if she don't get fixed.