I'm a newbie here and have been really interested reading your experiences with head tremors. Firstly, sorry this is so long but hope the details will trigger some common thread (no pun intended!). The description "like Parkinsons" is so accurate. My white boy Bobby started having them 2.5 months ago and the first episode scared me to death. He just strolled in the kitchen one evening and stood there as if to say Hey Mum what's happening? It stopped within a minute, and he was aware of everything throughout. Another one came about 5 minutes later and we went straight to emergency vet. She thought it could be epilepsy but since then our vet ruled it out (and through my research, it's appeared to me to be quite different to that). We kept a video handy and a few nights later, he had another one which we managed to film so the vet could see the whole thing. He was puzzled and had not heard of Boxer head tremors. I've been trying to think what had happened/changed before the first one started - looking for clues. OK, about one month or so prior, he had had his annual booster shots and later a rabies booster (we may move overseas). 2 weeks before, Bobby (and his sister) had been boarding for one week and later he was ill (vomiting, blood in stools, weight loss). Lots of blood tests etc - nothing conclusive - bit of a mystery. Later we thought the initial illness might have been triggered by stress? (1st time in kennels). After first tremor, vet queried visiting a neurologist but advised they would possibly find nothing and suggested we try a course of Prednisolone first with a low fat (Lite) diet - still vomiting once a day in morning. Tremors happened twice after that. Now off tablets, he's back to his old self, gained the weight etc and no tremors for about one month.
GoCougs - yes, he seems to have them when he has just woken up or very relaxed on the lounge - never in the day (that we see).
Debbie2166 - to answer your query to all - he was on Advocate heartworm & wormer, just switched him back to Revolution (with sep worm tabs).
Sorry this is so long - thought I'd put the key points in case anyone's history is similar. I'd also be really interested in any episodes of tremors with Boxers in Australia, everything I've read so far has been in US.