Cat allergy yog tshwm sim los ntawm glycoprotein ib txwm muaj nyob hauv cov qog sebaceous, Sib d1. Contrary to nrov kev ntseeg, miv plaub hau nws tus kheej tsis yog allergenic.

Nws muaj nyob rau hauv neeg dander, tab sis kuj nyob rau hauv qaub ncaug, tso zis thiab nyob rau hauv dav dav, nyob rau hauv tag nrho cov zais cia ntawm miv ( kua muag, mucus, thiab lwm yam). Qhov no protein nyob qhov twg tus miv mus thiab kis tshwj xeeb tshaj yog thaum ntxuav. Ob peb feeb mus rau ob peb teev tom qab tau ntsib nrog tus tsiaj, lossis hauv thaj chaw uas muaj tus tsiaj nyob, tus kab mob ua xua tshwm sim. thawj cov tsos mob.