<human>: So a little over a week ago my oldest cat, a female Calico named Coco was sitting on my lap. Suddenly I noticed her head start twitching, almost like a person with Parkinson's shakes, (my hair dresser has parkinson's so i am familiar with the tremors). She didn't seem distressed by it, and continued purring and was acting normal aside from the shakes. It only lasted a minute and I haven't seen her do it again since. 

A brief medical history, this cat is allergic to everything under the sun: grass, trees, dogs, lamb, fleas, we had one of them allergy tests done. She got encephalitis a few years ago when our basement flooded, she broke her tail a few years ago in a mystery accident we still haven't solved, she gets frequent colds due to her allergies and also has a habit of chewing off her fur because of her allergies (but she has been really good about that lately). She is also only allowed outside with one of us watching her and never leaves the deck. 

We have spent literally thousands of dollars on this cat and her medical problems since we got her 8 years ago, and she is 10 now. She is the best cat I have ever had and me and my family love her to pieces, but my parent's are getting drained at this point. I try to help as much as I can but since I am taking one of the other cats when I move out I pay for all his vet bills, and I only make $11 an hour at my crappy job :/

She is pretty much my best friend and the only reason I'm not taking her is because I know I wouldn't be able to afford it. I'm not looking for a clear answer, I just want to know if anyone else's cat has ever had a problem like this. My first thought was since she had a cold at the time (which we were medicating), maybe her equilibrium was just off, she was pretty congested. If anyone has experienced this with their cat before please let me know, it would at least possibly give us a place to start looking. She seems fine now and has been in a really good mood for the last few days :)

Can you provide a brief overview of the text?
<bot>: My cat had the shakes 1 time last week in her head. She had a cold but I'm not sure that was related at all. Any ideas?