Whats wrong with my cat? She has been constantly sneezing since she was a little kitten!!?

She's probably allergic to something in your house (dust?) If it does get worse, for example she coughs really loudly and sneezes more often than before, then take her to the vet. And the reason why she wheezes might be because of hair. Does she lick herself constantly? There is a type of medicine that can get rid of the hairs she licked up.