Who is CriticalCareDVM?

Board-Certified Veterinary Specialist. Educator. Coach. Mentor.

Christopher G. Byers, DVM, DACVECC, DACVIM (SAIM), CVJ is a practicing dual board-certified veterinary specialist, recognized international speaker, and respected author. Dr. Byers enjoys teaching, and is passionate about helping pet parents understand their fur baby’s health problems. He launched CriticalCareDVM.com to provide dog and cat owners with high quality, accurate, and comprehensive information they need to understand their pet’s health problems. Since 2014 the information available at CriticalCareDVM.com has been extensively used by pet parents and veterinarians, alike, helping Dr. Byers realize his primary goal: promoting the triad of care, a powerful collaborative partnership between pet owners, primary care veterinarians, and board-certified veterinary specialists.


  1. Diane Bostic

    I wanted to ask if grain-free dog food is contributing to anal gland problems more so recently.

    • Hi! Thanks for a great question. To my knowledge, there is no scientific evidence linking grain-free foods with anal gland issues. There is evidence, however, anal gland problems – particularly impaction, chronic inflammation (called anal sacculitis) and abscess formation – may be associated with food and/or environmental allergies. To diagnosis the former, a strict food trial must be performed. To diagnose the latter, intradermal skin testing is needed. In my experience, board-certified veterinary dermatologists do not recommended blood allergy testing as they are not as accurate as intradermal skin tests. I hope this information is helpful! If you need to partner with a board-certified veterinary dermatologist, please visit http://www.acvd.org to find one in your area!

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