Hair loss in cat - Answered by Dr. Lee

[malulani209]

My cat had a tumor on his inner hind leg that was removed a year ago. Within the past year he has lost 2 pounds, vomits, and his hair is missing in patches, but then grows back. Just now I took his collar off to find a ring of missing hair around his neck! The collar was not tight at all, in fact the cat could have slipped it off he wanted to. An ex-ray showed an enlarged liver and we (the vet and I) think the tumor has spread into cancer in his abdomen, but the vet said an ultrasound would be needed to confirm it. The vet also said the cancer would not be causing the hair loss. The vet did numerous tests, but he said each came back negative. Any tips on what I should do now?