Welcome to Justanswer! I am Dr. Altman and happy to assist you both today!
I am so sorry no one has assisted you yet today and that Buddy has this swollen paw and wound. I can give you basic guidelines but if the swelling is not subsiding, the black area is widening or progressing then please find a veterinary er in your area to treat him
1.) No licking! If this area is reachable then please sock on or a cone to prevent her from reaching the area. Licking introduces oral bacteria to the area and can increase risk of inflammation and infection
2.) Just to confirm the benadryl dose at 1 mg/ pound every 8 hours so if he is 75 pounds he would get THREE adult 25 mg tablets
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. It is great you already did the epsom salt soaks x 10 minutes and this can be continued prior to the shampoo
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.) Limit activity. The more activity the more likely this wound will take longer to heal because the skin cannot heal in an active setting, particularly on the side.
Please let me know if this information makes sense and any additional questions i can assist with or clarify today. Again if it is not improving or progressing please have him seen by a veterinary er
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