Your dog could indeed have fleas in winter in the colder areas of the country. Fleas are not seasonal, many will die off in cool weather, but their eggs can live on for months. Fleas lay eggs in the carpet, couches, or dog bedding taking advantage of the heat in your house as well as in the dirt, so it takes a while to break the whole cycle once they are there.

Don't know what kind of allergies your dog has, but my 11 year old poodle had gotten, about two years ago, a skin problem that not only made her scratch and clean continually, but she stinks.   REALLY STINKS>    After much searching and many doctor bills, I just ordered and got in yesterday "Health Concerns - Skin Balance.  For the first time she did not scratch all night long last night.   I am going to give her three aday as written on the bottle, but wanted to share my "find" with everyone.      Sherry Breedlove