New Bolton Center Kennett Square, PA
Emergencies & Appointments:
Ryan Hospital Philadelphia, PA

Dermatology & Allergy

The Section of Dermatology and Allergy at Penn Vet evaluates pet animals for all types of skin, ear canal, hair and nail (claw) disorders.

Small-animal patients (dogs and cats) are seen by appointment at the Ryan Veterinary Hospital in Philadelphia.  Large-animal patients are seen by appointment at New Bolton Center in Kennett Square, PA.

At Ryan Hospital, dermatologists are available for consultation regarding exotic mammals, reptiles and birds, but these patients must come through Ryan's Special Species Service, where specialists in exotic animal medicine are the primary veterinarians providing the evaluation and treatment.
Hairless cat, Penn Vet Dermatology


Phone: 215-746-8387
Please request a dermatology appointment.
Referrals are preferred.

Ryan Hospital
3800 Spruce Street
Philadelphia, PA 19104

What We Offer

Diagnosis and treatment of the following skin disease types:

Skin Disease Types
  • Allergic
  • Heritable skin diseases
  • Parasitic
  • Ear canal
  • Autoimmune
  • Nail
  • Endocrine
  • Footpad
  • Infectious
  • Hair growth

Estimated Time for Completion of Service

The Dermatology/Allergy clinic is an outpatient service, but clients should plan to spend at least two hours at the clinic with their pet. Many laboratory tests require several days to two weeks for results to be reported.

Referral by the family veterinarian is preferred. Please note that diagnostic procedures and services a patient might need after the initial consultation entail additional cost, and will be discussed at the time of the examination. We can provide estimates for treatment.

Led by board-certified faculty clinicians, Penn Vet's Dermatology Service strives for the best and most compassionate care of our patients.

Daniel Morris, Penn Vet, dermatology
  • Professor of Dermatology
  • Section Chief, Dermatology & Allergy
Elizabeth Mauldin, Penn Vet, dermatology
  • Associate Professor of Dermatology and Anatomic Pathology
  • Associate Chair of Pathobiology
Dr. Christine Cain
  • Associate Professor of Dermatology
Dr. Kathryn Rook
  • Assistant Professor, Clinical Dermatology and Allergy

Dermatology & Allergy Residents 
 Dr. Lindsey Citron  
  • Lindsey Citron, VMD
  • Resident, Dermatology
Dr. Emily Davis 
  • Emily Davis, DVM
  • Resident, Dermatology 
 Christina Dierkes  
  • Christina Dierkes, DVM
  • Resident, Dermatology

Veterinary Technician/Nursing Staff
Colleen Walters, Penn Vet, dermatology
  • Colleen Walters, CVT
  • Kate Wilkinson, CVT 

Penn Vet, dermatology, allergy testTo set up an appointment with Dermatology, please contact the Ryan Hospital Appointment Desk at 215-898-4680. Please request a dermatology appointment.

Referral by the family veterinarian is preferred. Since a doctor/client/patient relationship is required prior to making recommendations on diagnosis or treatment, consultation directly with pet owners is not provided until the pet has been examined by a dermatology staff doctor.

Faculty and residents in the Section of Dermatology & Allergy engage in a wide gamut of clinically based studies that focus on the identification, pathogenesis, and treatment of spontaneous dermatologic diseases (infectious, autoimmune, allergic, hereditary) of companion animals as well as comparative dermatology and implications to human health. HairlessDog Penn Vet Dermatology

Publication lists are available in individual faculty members’ profiles.