My Creamsicle has vestibular hyoplasia which means that the CH also caused deafness. She had all the symptoms of CH and they were so severe that, in the beginning, I feared that her only relief would be to have her PTS. She couldn't stand or eat on her own because her head swung violently back and forth like a pendulum. When she finally could walk, she could only walk in circles. She improved greatly over time, though, and now only falls when she gets too excited. So don't lose hope. My Siamese, Coco Puff, has a slight case of CH and it didn't reveal itself for at least 3 months after he was born, if I remember correctly. I came home from work one day and found him sitting on my kitchen counter top, staring into space and I couldn't get him to snap out of it. He had that slight tremor in his head that you mentioned. After being examined by the vet, it was determined that he, too, is a CH kitty. Now, though, you'd never know it. He hasn't had an episode since and he's so strong! This may be the only symptom that your kitty ever has, although, obviously, I can't say that for sure. My vet, who has since retired, told me that the CH had been caused by a herpes virus yet none of the other kittens that I had rescued during the time I rescued both Creamsicle and Coco Puff ever developed CH. So I don't know. I hope this helps you even if just a little.