My dog has chafing spots on her back legs – what can it be?

Question: 

My dog seems to have some small chafing spots on the upper inside of both legs. I have put a triple antibiotic salve on it and it seems to work for a bit, but comes back. I noticed it seems to get worse after she's been outside. It is very cold outside with temperatures well below freezing.  Could this be the cause?

Answer: 

Dry skin would not necessarily distribute over the hind limbs only. Rechecking your puppy for fleas with a flea comb would be recommended as infrequent flea exposure with 1 or 2 fleas can keep flea allergy active. Other considerations would be a possible food allergy or less likely scabies. A Staph infection on the skin could also be contributing to the problem. A dermatology exam would be a good place to start to better characterize this problem and direct appropriate treatment for your puppy.