In June my Labrador developed a lesion on her side. She was treated with antibiotics and …

In June my Labrador developed a lesion on her side. She was treated with antibiotics and a medicated shampoo with no success. Her hair started thinning and she developed a lesion on the opposite side. Bloodwork was run to test for Cushings which was negative. As she started to take a Cushings type appearance her docs followed up with an ultrasound. In October she had a punch biopsy. She was treated with Apoquel with no improvement. She has lesions on her chest, both sides near her hips and one near her hind end. I have never seen her itching or chewing. The lesions are crusty and pretty dense. Hair loss is only on her trunk.
A little history: my dog is 10 1/2, has spay induced incontinence, history of frequent UTI’s, frequent urination, and megaesophagus. She is on Dasuquin, Cranmate and Welactin. Despite her plethora of health issues she has never had skin issues. Typically her coat is blue-black, thick and shiny.
She doesn’t seem to be uncomfortable but she seems to have a pretty high pain threshold.
Thank you for your time.

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Laura
19 days ago

Did they test her thyroid? A FULL thyroid panel, not just T4?