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My dog has a red rash after ticks. Could it be Lyme disease again?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Female | 4 years and 3 months old | 102 lbs

My dog has had a slew of ticks this fall and she has developed a red spotty rash over a large area on her neck.. its mostly around her collar. Should I be worried? She had lyme disease around 1 years old

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1 Answer

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Answered By Jenny, DVM

Veterinarian

Published on October 22nd, 2017

Ticks can transmit disease such as lyme disease. This can cause a rash or bruising, lameness and tremors, and generalized not feeling well--often non specific signs. I would take her to the vet to have a test ran for tick borne disease and have a CBC performed to make sure there is no signs of a decreased counts that can cause bruising. It could be inflammation from the collar but I would not risk that chance without testings due to the extreme side effects of tick borne disease.

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