Scratching face/neck/ear, head shaking
I've had ET for 1yr now. I have always thought it normal for cats to scratch their face/neck/ear occasionally. I suspect ET was allergic to chicken earlier when he used to vomit and had diarrhea. Until recently, I confirmed ET is allergic to chicken when he started scratching excessively when I put him on chicken again. Since refraining chicken, he stopped his excessive scratching, but he is still scratching.
From what I read online, the symptoms point to ear mite. I checked his ear, yes, I see some ear wax, cleaned it out, I don't see much now. Checked for bald patches, nothing. Feel for bump, didn't feel any. Trying to see if there are any rashes, but don't know how to. He does shakes his head occasionally, I wonder if it is just habitual or really ear mite problem.
So, is it normal for cats to scratch themselves and shake their head ocassionally? I didn't find anything unusual, didn't find any tick or flea too. He has recently been eating Wellness Core Turkey & Duck, could it be he is mildly allergic to Turkey & Duck too?