Welcome to Justanswer! I am Dr. Altman and happy to assist you both today!
So sorry to hear your dog has a wound! I can definitely give you recommendations to minimize infection and reduce healing time but if there is any discharge or it is not healing then please have your vet evaluate the lesion to ensure additional medication is not warranted. Please also keep the bug to ensure your veterinarian (familiar with bugs in your area) is able to confirm whether or not it is one to be worried about
1.) No scratching if you are able to minimize either with a cone / e-collar or keeping him close to you to prevent the trauma. It can exacerbate the wound and delay healing
2.) Trim the hair around the wound if there is any but please be cautious with scissors so close to the ear and eye
3.) Use ivory soap and water or dog oatmeal shampoo to the area twice daily with ten minute contact time before rinsing and tap dry. I am glad you shampooed it but if you can repeat later today with a blander shampoo as flea and tick shampoo tends to be quite harsh on the skin. Once the wound is healing you can taper frequency
4.) I prefer to not apply salves or ointments because it traps in moisture to the area and reduces healing or delays healing time. If needed you can put a very thin layer of a triple antibiotic on the area after cleaning
5.) Remove any scabbing that occurs with healing. Again it also traps in moisture and then can actually abscess
6.) If GG begins to rub the area then using benadryl (diphenhydramine) 1 mg/ pound every 8 hours to control the itch. This may cause mild sedation
Please let me know if this information makes sense and any additional questions i can assist with or clarify today. I hope she has no issues healing from this bug's attachment!
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