My Dog Has Swelling Of The Mouth And Eye Area. He Can Barely Open His Mouth To Eat. It Doesn't Seem To Be An Allergic Reaction. What Could It Be?


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Anonymous answered
Allergic reaction, trauma, tooth root abscess, and infection are common causes of facial swelling.  If your dog has any fractured teeth in the area under the swelling it could be a tooth root abscess--most infected teeth do not have pus draining and many do not have gingival (gum tissue) recession.  Peri-ocular, muzzle, and lip swelling is common with allergic reactions. 
An uncommon cause of pain when opening the mouth is a condition called masticatory myositis (inflammation of the muscles that enable chewing). 
Your dog needs to be rechecked by a veterinarian.  If no other causes are noted on examination then he needs to be sedated for a thorough oral exam, probing of the teeth, dental and/or skull x-rays, and a biopsy if appropriate.

thanked the writer.
Anonymous commented
Thank you so much. It is Masticatory myositis. They had to put my dog under to pry open his mouth. He is on Predesone for 6 months. They think they got to him before it got too bad but still don't know if there is permanent damage as of yet. I am giving him soft food and hoping for the best. They said he could have a relapse and to watch close. Do you know how they get this ? Thank you for informative answer it helped a lot.

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