My French Bulldog has a rash and dandruff after permethrin. What's wrong?

Thanks for using Petco Pet Education Center, formerly Petcoach! If she tests negative for mange, I would be suspicious that this may be due to skin allergies. It really comes down to figuring out what is causing her allergies so that they can be treated or the specific allergen avoided. There are many things that can cause allergies though in most cases they can be broken down into 3 big categories: flea, food and environmental allergies. Allergies are usually worked up in a stepwise fashion starting with flea allergies as this is the easiest and cheapest to take care of. If not on a flea preventative, then it would be a good idea to get started on one. If already on one then it would be a good idea to change to something else (there are many new products out in the market). If not improved in 1-3 months then it is time to move on and check for food allergies by switching to a novel diet (new protein and new carbohydrate). If that does not seem to be the issue then you are left out having to check for environmental allergies which require blood and/or skin tests. Allergies can be very frustrating to deal with at first but so rewarding at the end when we are able to treat them effectively!

Thank you for posting your question. I see Otis is a 1yr old French Bulldog and the pictures seem to show several red bumps on his abdomen. Where I practice we do see quite a few French bulldogs with environmental allergies. However, that being said there are multiple causes for the bumps that you are seeing. One possible explanation could be a simple environmental allergy. I see that your veterinarian had started Otis on topical shampoo therapy along with oral antibiotics. This is a good approach, and sometimes this can take some time to get results for the problem to resolve. It does appear based on your pictures that Otis may have a skin infection. The topical shampoo and antibiotics will typically treat this. However, sometimes you have to switch to a different antibiotic and shampoo if it has not resolved with the instructed course of treatment. Also, being 1yr old, skin mites such as demodex and Sarcoptic mange (as you have already mentioned) may also be the culprit. If a skin scraping has not been performed, then I would have your veterinarian do this as the current medications will not treat mites. I would also recommend fish oil (such as welactin), dermoscent essential 6 spot on and duoxo chlorhexidine and PS combination shampoo all of which can be found on Amazon.

Infectious skin diseases are certainly high on the list of possible causes here, especially fungal diseases. Cancer would not spread to everyone in this manner, so that is low on the list of possibilities. I probably would've opted for a punch biopsy however, which can offer more insight into what this is. Also a bacterial culture should be considered. Mange doesn't typically present in this manner, but with a punch biopsy you can help rule this in or out. A needle biopsy unfortuantely will only let you know if there are cancerous cells or not. I do hope that you are able to get to the bottom of this mysterious skin problem in all of your pets and also yourselves. Best of luck and take care.

Poor Lebron! It's true that skin problems like this can be caused by a number of different things. Usually, some diagnostic testing (such as a skin scrape, cytology, possible bacterial or fungal culture, etc.) is needed to determine what the problem is - so I'm wondering if any tests were done at your vet visit, or if any medications were prescribed to try and treat the problem. If not, I would recommend taking Lebron back for a recheck visit, or seeking a second opinion from another vet. It's likely that he will need prescription medication such as a steroid and/or antibiotic in order to treat the problem, depending on what the testing shows.

This is very likely to be a scrotal dermatitis. It could be cause by a contact allergy or irritation or by a infective agent (bacteria, fungal). I strongly recommend to avoid any licking, chewing or scratching of the area (Gizmo would probably need a buster collar) otherwise the inflammation wan't disappear. You could bath the area with some diluted hibiscrub once a day for 3 days but if the problem persist a check up with the vet and prescription meds might be needed. Please post again on the forum if you would like to discuss it further. I hope my answer was helpful.

Thank you for submitting your question regarding Kevin. I recommend that he sees a veterinarian. A fungal infection such as ringworm or an overgrowth of mites known as demodex can both cause the skin to look this way. His veterinarian will likely perform skin tests to determine the cause of his symptoms. Then treatment can be started. I hope this information helps!

Thank you for submitting your question regarding Elvis. I recommend that he sees his veterinarian today as his skin appears uncomfortable. He could be experiencing a skin infection secondary to allergies, fleas, or a problem due to ringworm or mites. His veterinarian will examine him and may recommend skin tests. From there, medications can be prescribed to help him feel better. In the meantime, you can bathe him with a moisturizing shampoo and conditioner such as an oatmeal or fatty acid based formula to soothe his skin. I hope this information helps!