Why is my 10-month-old Labrador scratching her mouth until it's red?

Hi there and thank you for using pet coach to address your concern. With the symptoms you are describing, I would suspect allergies or some type of infection. If you have not already, I would get Harper seen by your vet as an infection would require oral antibiotics. Sometimes skin parasites can also affect this area. Your vet can perform the necessary Diagnostics to determine what the primary cause is and to put Harper on the most appropriate treatment. Please let me know if you have any other questions or concerns. I am also available via consultation if needed.

Hi, and thanks for your question. This could be due to an allergy, although it could also be infection or mites. First of all, in order to rule out skin parasites, you will need to treat with a high quality flea treatment, then ask the vet to perform a skin scrape - this might reveal an infection or a mite infestation. If all of those came back negative, the next step is to treat the allergy symptomatically and try to discover the cause of the allergy. Three main type of allergies are usually affecting pets: food allergies, flea and parasite related ones and environmental type (allergens coming from trees, pollens, dust etc etc). Some medications can be given by the vet in order to repair any possible skin lesions (like steroids and antibiotics). Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further. Please find the time to give us a feedback about the consultation as that will be used to improve our service.

Thanks for using Petco Pet Education Center, formerly Petcoach! This is possibly due to allergies. It really comes down to figuring out what is causing his allergies so that they can be treated or the specific allergen avoided. A secondary infection is likely and also needs to be addressed. 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!

Thanks for using Petco Pet Education Center, formerly Petcoach! This is possibly due to allergies. It really comes down to figuring out what is causing his allergies so that they can be treated or the specific allergen avoided. A secondary infection is likely and also needs to be addressed. There are medications such as Apoquel or prednisone which may help with the itch. 

 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!


Poor Momo! He could have a sore tooth in the back of his mouth causing him to scratch at it, he could have a skin infection of the side of the mouth called a lip fold pyoderma, it could be caused by allergies, or he could have a foreign body stuck in his mouth. I recommend taking Momo into your vet to have his mouth examined, have the cause of the scratching diagnosed, and you vet can determine the appropriate treatment.

I would guess Lola could have a bacterial infection around her mouth. Trauma could also cause similar lesions. If she seems itchy it is possible that she has an infection secondary to allergies. A bacterial skin infection is often treated with oral antibiotics so I would recommend making an appointment to have your vet take a look.

Thank you for contacting Pet Coach with your question about Snickers. Given that this licking and scratching is slowing down, keep an eye on her for now. Should she keep licking and scratching or the spot gets bigger, then I would take her into the vet. I hope this helps!