Ask the Veterinarian/fleas


I have 3 chi's, and I got Cap Star pills to kill the fleas, it worked on 2 0f my dogs, but not the other one, he has been scratching all night, I know they have some kind of allergies, but I have tried everything, allergy pills and shots, nothing works, how can I relieve this scratching.

Capstar kills the fleas that are on the skin for about 12 hours and then it is gone.  The flea bites can last for 30-45 days in some dogs.  Itching can be relieved with corticosteroids and if they do not work in this dog, then I would have the dog checked for sarcoptic mange mites, which will not respond to steroids.  If the dog has a skin infection, the itching will not stop without antibiotics. HAve the vet check the dog to see why he is itchy.

Ask the Veterinarian

All Answers

Answers by Expert:

Ask Experts


Dr. Louis N. Gotthelf


Dermatology and ear diseases of dogs and cats


I am the author of "Small Animal Ear Diseases; An Illustrated Guide" published by W.B. Saunders. I have over 25 years of clinical experience with a special interest in dermatologic conditions and ear diseases.

American Academy of Veterinary Dermatology

Veterinary Forum
Veterinary Medicine
Waltham Focus

©2016 All rights reserved.