Can you get allergies?

Yes, you can develop diffenrent allergies as you get older. This can go the other way also, you can out grow being allergic to somethings. Try taking some kind of antihistimine and see if your symptoms go away. If they do then you are more than likely allergic to something in your environment. Keep track of what you are around when these symptoms start up and start narrowing down what you are allergic to. If you feel that it is your cat, there are shampoos that are made to reduce cat dander. Try bathing him in it to see if it reduces your symptoms. Then only other way of finding out what all you are allergic to is to go to an allergist and allow them to do allergy test. They will ususally do small skin scrapings on your back and arms to see what makes you welp up.

Well, the thing you're talking about can really be an allergy. It's not unusual that one might develop an allergy during his/her lifetime. For example in my childhood I was able to eat the raw carrot, but now I get an allergic reaction every time I do this. But there is a positive effect too: you have a chance to grow the allergy out too. I used to be allergic to chocolate, citrus fruits, honey, coconut, tomatoes. Now I have grown these allergies out and I am very happy about it.

Yes, as others have said, you can develop allergies at any time and seemingly for no reason. I was never allergic to anything until the last few years, now it seems like I'm allergic to everything! Especially good food. ;)

yes! absolutely allergies can seemingly pop up out of no where! one summer i ended up being allergic to several different grasses and trees and had never had that problem before! i then got shots over the winter and have not had the problem since (nor had i had a problem before that summer either!)