My cat Jose has been seen by a neurologist last year & is still undiagnosed. He will see a different neurologist in 1 week, but I am still seeking someone else who has been through this. He is weak in the hind legs & has lost muscle mass in both. He walks on his hocks often & is incredibly wobbly when moving. He has slight hair loss on both ears, which may not be related. He vomits occasionally but sometimes as frequently as 1-2 times a week. His symptoms began roughly 1 & 1/2 years ago; he was completely normal before. His symptoms began roughly after being sedated with Acepromazine. Doctors do not think this is related but I still like to throw it in, just in case. Also, he cannot metabolize B12 & therefore gets bi-weekly injections. He is amazing & I love him dearly & wish we could find the cause so that we can start treatment. If anyone has had similar issues, I would love to hear your experience. Thank you!