Hi, Patty and welcome!
I'm so sorry Rooster's symptoms have you worried.
From your description, it sounds like he may have a neurological condition called feline hyperesthesia. This causes the skin on the back to twitch or 'ripple/roll' and cats with this condition will typically try to bite at their backs or tail, plus, take off running, suddenly, like something is chasing them. This condition has been likened to seizures and a neurological workup by a vet or specialist would be a good next step. Here is more information about this condition:
There are various treatments you can try at home, while the vet may recommend a prescription anti-anxiety medication to help with the symptoms. Some home treatments are listed here:
You're already doing the right things, in trying to comfort and distract him, when this happens, but he has no control over it.
Since you mentioned you've been traveling a lot, this may be adding to his stress. For the moment, try Feliway, a cat calming pheromone, which comes in a plug in diffuser and a spray. Here is more information:
I hope this helped and all will be well with your Rooster! Please let me know how he's doing and what the vet tells you. Thanks!
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