Hair loss after using a spot-on tick treatment

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Caroline78 Icon representing the flag French
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Hi everyone.

My cat recently had a tick which I had removed at the vet's.

Afterwards, they gave me a three-month spot-on treatment to apply to the scruff of his neck.

When I put it on him, some of the liquid stayed on his fur. At first, I thought it would just soak in, but it stayed there and became really greasy. The next day, he started losing fur in that exact spot, so I rinsed his neck to try and get the greasiness off.

Does anyone know why he might have had this reaction? Will the treatment still be effective? And is this the right kind of tick treatment to use?

Translated from French
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2 answers
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    • ProvetoJuniorConseil
    Provetojuniorconseil Icon representing the flag French
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    Hi there,

    Your cat has probably had an allergic reaction.

    If you’ve rinsed it off and they’ve lost fur around the area, it’s very likely that the product won’t be effective anymore. Ask your vet for advice on a different flea treatment and make a note somewhere (in their vaccination record, for example) of the name of the product your cat didn’t get on with, so you can remember it in the future.

    By switching to a different active ingredient, the problem should normally clear up.

    Lucie

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    Anonymous user Icon representing the flag French
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    Hi there, some cats can have quite strong reactions to certain spot-on treatments. It’s true that this can lead to hair loss. The only thing to do is stop using that specific product and get in touch with your vet. They can advise you on when it’s safe to give a different treatment and, more importantly, help you switch to a different type of flea and tick protection. There are plenty of brands and active ingredients out there, and they don't all suit every pet—some can be ineffective, while others cause reactions.
    Translated from French

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