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Why does my dog get ear infections and itch despite flea treatment?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Female | unspayed | 3 years and 10 months old

Hi my shitzu cross has been a house pet for 2 years then she got her jabs and she then stared to go outside but since then she keeps getting a ear infection and itches uncontrollable I have seen two different vets and they told me that she is allergic to fleas but I have her flea treatment sent directly to me and I don't understand why this has never happened before each time I go to see the vet they prescribe her prednidale and rilexine and the other vet gave her prednicare please help

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1 Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on June 3rd, 2018

Chronic ear and skin infections may have an allergic component as stated by your veterinarian. It may be fleas, but the likelihood is reduced with regular flea control. Even then though, in a sensitive dog, one flea bite may be enough to cause a serious allergic reaction. The steroid (Prednidale) and antibiotic (Rilexine) are temporary fixes, treating just the symptoms but not the underlying condition. There are also environmental allergies and food sensitivities that may responsible. The sheer number of potential allergens is what makes diagnosing allergies so frustrating. Discuss allergy testing, hydrolyzed diets and food elimination trials with your veterinarian. A consult with a veterinary dermatologist ma be indicated. You should also discuss antihistamine use, either seasonally or year round, with your veterinarian. Atopica and Apoquel are prescription medications that may help treat allergies and can be dispensed by your vet. Consider adding an essential fatty acid supplement, such as a fish oil, to Irish's diet to promote healthy skin and coat. The EFAs may also help some with the itching and inflammation. DermCaps or EicosaCaps are two recommended products.

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