Mouth Blisters Dogs Any Ideas What Would Cause My Dogs To Develop Blisters On Their Lips And Around Their Mouths?

Any ideas what would cause my dogs to develop blisters on their lips and around their mouths? - mouth blisters dogs

Recently, we treat our dogs with the revolution of scabies to. We rescued a stray dog without realizing she had scabies. After 8 weeks the other dogs in our house began to show symptoms. We go with the revolution, with decisions taken by the veterinarian. It was about 2 weeks and the last day, 2 of 4 dogs developed blisters around the mouth. The puppy, who has started all that has none. It seems to affect them much, but do not eat a dog. Any help would be great! Thank you!