Can casein sensitivity cause all these issues and what about got cheese?

So my husband gets cold sores when he has regular cheese and horrible panic attacks followed by manic states.. but for last 2 weeks he has ate a lot of goat cheese particular manchego. Like 2 products worth..

Now he has been complaining for the past week of skin itchy, some weird feelings like his lips are chapped and burning, dry mouth .. could casein also do this? How long no dairy till it may be out

I though goat cheese was suppose to be ok with no casein?

Thank you for any insight