Deer cutaneous papillomatosis
Deer cutaneous papillomatosis is a disease caused by a virus called cervid papillomavirus. This virus causes small benign tumors to appear on the skin, called papillomas or fibropapillomas. These growths look like warts. They mainly affect...
What is it?
Deer cutaneous papillomatosis is a disease caused by a virus called cervid papillomavirus. This virus causes small benign tumors to appear on the skin, called papillomas or fibropapillomas. These growths look like warts. They mainly affect the skin of the neck, shoulders, back and sometimes the head. The disease is most often benign and does not affect the general condition of the animal, except in the event of complications.\n\nThis condition is known in several species of deer around the world, including deer. It can appear isolated in a single animal or affect several individuals from the same herd or the same geographical area, particularly in captivity or in animal parks.
Commonly observed signs
These signs are neither exhaustive nor specific. Only a veterinarian can establish a diagnosis.
Related signs — each one links to its page:
The most visible sign is the appearance of small masses on the skin, a few millimeters to several centimeters in diameter. These masses are initially smooth then become rough, dark and sometimes crusty, resembling warts.\n\nThey can be isolated or numerous, grouped together in the same area of the body. The neck, shoulders, back and head are the most frequently affected areas.\n\nIn the majority of cases, the deer remains in good general health: it continues to eat, move and behave normally. The disease does not cause fever or fatigue in simple forms.\n\nComplications can occur if the papillomas become very numerous, if they are located near the eyes, mouth or joints, or if they become infected, injured or bleed.
When to consult without delay
This list does not replace veterinary advice. It gathers situations that justify a prompt consultation.
Causes and risk factors
The disease is caused by a papillomavirus specific to cervids. This virus infects skin cells and stimulates their excessive growth, which forms papillomas. The virus remains localized in the skin and does not spread throughout the body.
Young deer seem more sensitive than adults. Promiscuity between animals, the presence of skin wounds, a high density of biting insects and a weakened immune system favor the appearance and spread of the disease. Animal parks and farms with a high density of animals are contexts at increased risk.
Transmission
Transmission occurs by direct contact between animals, or indirectly by surfaces, plants or biting insects which carry the virus from a lesion to healthy skin, often via small wounds or scratches. Young animals and those living in dense groups, such as in parks or in captivity, are more exposed.
Diagnosis and care
Diagnosis is the veterinarian's responsibility, based on clinical examination and laboratory tests. Care is decided case by case.
The veterinarian makes the diagnosis by observing the typical appearance of the skin lesions. In some cases, a sample of the mass can be analyzed in the laboratory to confirm that it is indeed a viral papilloma and to rule out other causes of skin tumors.
Treatment
In most cases, no treatment is necessary: the papillomas regress spontaneously after several weeks to a few months, once the animal's immune system eliminates the virus. If the lesions are bothersome, infected or very numerous, surgical removal may be considered by the veterinarian. Local care and antibiotics can be used in the event of bacterial superinfection of the lesions.
Treatment depends on the cause and the animal's condition: it must be determined by a veterinarian. No self-medication.
Prevention
There is no vaccine against this disease in deer. Prevention is based on limiting promiscuity between animals, fighting against biting insects and maintaining enclosures to avoid skin injuries. Isolation of severely affected animals can limit spread within a group.
Possible complications
Complications are rare but possible: bacterial superinfection of an injured lesion, bleeding if the papilloma is torn off, mechanical discomfort if the mass is located near an eye, the mouth or a joint. A very significant proliferation can, in rare cases, weaken an animal that is already weakened elsewhere.
When to see a veterinarian
Appearance of numerous or rapidly growing masses on the skin.\nLesion which bleeds, becomes infected or gives off a bad odor.\nMass located near an eye, the mouth or hindering movements.\nAlteration of the general condition of the animal (loss of appetite, depression).\nDoubt about the nature of a newly observed skin mass.
Prognosis
The prognosis is generally good. The vast majority of papillomas regress spontaneously without sequelae within a few weeks to a few months. Complicated cases, although rare, require veterinary care but most often have a good prognosis after treatment.
Frequently asked questions
Is deer papillomatosis dangerous for the animal?
No, in the vast majority of cases, it is a benign disease that does not affect the general condition of the deer. Warts often disappear on their own.
Can you catch this disease through contact with an affected deer?
No, this papillomavirus is specific to deer. It is not transmitted to humans or other unrelated animal species.
Should warts always be removed?
No, ablation is only considered if the papillomas are numerous, bothersome, infected or located in a sensitive area such as near the eyes.
Can these papillomas reappear?
A reappearance is possible in the event of new exposure to the virus, but an animal which has developed an immune response is generally protected for a certain period of time.
References
WOAH — Organisation mondiale de la santé animale (ex-OIE)
Content reviewed by the TunisieVet editorial team · Updated 15 September 2026
Comments (0)
No comments yet.
AT A GLANCE
Need a veterinarian?
Find a practitioner near you on TunisieVet, with their specialities, hours and contact details.
Find a veterinarianCategories
This information is provided for educational purposes only and is not a substitute for a veterinary consultation. If you have any concerns about your animal's health, consult a veterinarian.
Thinking of welcoming a pet? Dogs and cats are waiting for a family in Tunisia, and adoption is completely free.
Adoption listingsTo discover
Related diseases and linked Animalia content.
Coccidiosis
Parasitic
Foot-and-mouth disease
Viral · Vaccine available
Bovine tuberculosis
Bacterial · Vaccine available
Bluetongue
Viral · Vaccine available
TunisieVet in your pocket 📱🐾 Access your veterinary services wherever you are. [ Download the app ]
Learn more