Can a second cat activate allergies? [View All]

[bicentennial_baby]

May seem like an odd question, but, Sniffa used to be mildly allergic to cats and dogs, due to living in a no-pet household for 10 years. Once we got Kitteh, he was fine, no reaction at all.

Since we've had Milk, he has been SO congested, runny nose, sneezing and chest congested, it's nuts. He thought it was a cold at first, but now we're thinking it might be the additional cat and her dander, etc. Cat x2.

Is that possible? He took Claritin before bed to see if that helps. We're not planning on getting rid of Milk if that is the case, we're just wondering if that could be it, so we can mitigate the problem. I feel so bad for him. x(

Thanks. :)