If your pet is unwell it can be a confusing time trying to make sense of what your vet is doing and why. There are many tests commonly used in veterinary practice that help your vet to work out what is wrong with your pet. This information sheet explains what your vet is looking for when they perform tests to investigate an animal with a disease affecting the nervous system. Some of these tests can be done in general practice, but others are more difficult to perform or interpret and your pet may need to be referred to a specialist for these.