Black Spots in Dogs Due to Cyclical Flank Alopecia and Alopecia X
There is usually a medium to large-sized area of alopecic and hyperpigmentation along the sides. This is a condition in which there is hair loss is associated with changes in […]

Dr. Ian Spiegel (VMD, MHS, DACVD) is a board-certified dermatologist who has treated dermatologic cases in dogs for 20 years. He is a member of the American College of Veterinary Dermatology (ACVD) and a graduate of the University of Pennsylvania, School of Veterinary Medicine.
Photograph: Ian Brett Spiegel VMD, MHS, DACVD
Dr. Ian Brett Spiegel (VMD, MHS, DACVD) is a board-certified veterinary dermatologist who has been evaluating and treating dermatologic cases in dogs for almost 20 years.
Dr. Spiegel is a member of the American College of Veterinary Dermatology (ACVD) and a graduate of the University of Pennsylvania, School of Veterinary Medicine. Dr. Spiegel also serves as an expert in the field of dermatology for 'Veterinary Medicine', a peer reviewed journal offering up-to-date clinical information to veterinarians.
Dr. Spiegel became a Diplomate of the American College of Veterinary Dermatology (ACVD) and was honored with a Resident Research Award. After completing his residency, he managed the dermatology and allergy service for the largest privately owned veterinary hospital in the US with a general medicine and surgery practice, 24-hour emergency and critical care service, and specialty practice. He is now practicing for several veterinary clinics in New-Jersey.
Location: New-Jersey (USA)
Experience: 20+ years as a veterinarian and dermatologist
License No:Â Â 29VI00533600 from the New-Jersey division of consumer affairs.
Dr. Spiegel is currently a veterinary dermatologist for Garden State Veterinary Specialist (practice profile) , AnimERge (practice profile), BluePearl-Levittown, and Quakertown Veterinary Clinic.

There is usually a medium to large-sized area of alopecic and hyperpigmentation along the sides. This is a condition in which there is hair loss is associated with changes in […]

In this article, you'll find a collection of pictures and descriptions of common dog lumps & bumps, carefully curated by our experts: Dr. Ian Spiegel (VMD, MHS, DACVD), board-certified dermatologist […]
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Each of our veterinarians has earned a Doctorate in Veterinary Medicine (DVM) or equivalent unless otherwise specified. Articles are then vetted, when appropriate, by one of our Medical Directors.