she may have allergies to fleas. Is there an odor? My cat had this, it isn't to bad in the winter most likely because there isn't alot of fleas. Try to deflea her and if she likes to be brushed give her a powder bath ( using goldbond) sprinkle the powder on her and brush her till the powder is gone, at least most of it. Your house may be a little dusty after this but I'd rather have a happy cat then a dusty house.