Hamadryas sarcoptic mange
Sarcoptic mange is a skin disease caused by a tiny mite, Sarcoptes scabiei, which burrows under the skin. In the hamadryas, a baboon native to the Horn of Africa and the Arabian Peninsula often found in zoos, this disease causes severe itch...
What is it?
Sarcoptic mange is a skin disease caused by a tiny mite, Sarcoptes scabiei, which burrows under the skin. In the hamadryas, a baboon native to the Horn of Africa and the Arabian Peninsula often found in zoos, this disease causes severe itching and thickening of the skin. It can affect an isolated individual or spread quickly in a social group living in close contact.
Key point
An extensive and untreated infestation can seriously weaken the animal and compromise its well-being and that of the group.
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 first signs are intense itching, causing the animal to scratch or chew itself constantly.\n\nThe skin turns red, then thickens and wrinkles, especially around the face, ears, hands and areas with little hair.\n\nGrayish or yellowish scabs appear, and the coat falls out in patches.\n\nOver time, the animal may lose weight, become despondent and less active, a sign that the infestation becomes severe or that a skin infection is added.
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 microscopic mite, Sarcoptes scabiei, which burrows into the superficial layers of the skin to lay its eggs. It is this activity, as well as the body's allergic reaction to mites and their droppings, that triggers the itching and inflammation.
Young, old, weakened or immunocompromised animals are more susceptible to severe infestation. Promiscuity in groups, a poorly maintained enclosure, stress and poor general condition favor the establishment and spread of the disease.
Transmission
Transmission occurs by direct contact between individuals, which explains the rapid spread within a social group of hamadryas living closely together. It can also be done through a shared environment (bedding, enclosure structures) that has recently been contaminated. The mite can occasionally jump to other primate species, including humans, although it usually does not survive there for long.
Diagnosis and care
Diagnosis is the veterinarian's responsibility, based on clinical examination and laboratory tests. Care is decided case by case.
The veterinarian suspects sarcoptic mange due to the typical itching and skin lesions. The definitive diagnosis is based on a skin scraping examined under a microscope, allowing the mite, its eggs or its droppings to be found. Other skin examinations may be performed if the diagnosis remains uncertain.
Treatment
Treatment is based on external or systemic antiparasitics suitable for primates, prescribed and dosed only by the veterinarian. Skin care and, if necessary, additional anti-inflammatory or antibiotic treatment may be combined in the event of secondary infection. Cleaning and disinfection of the environment is an integral part of care.
Treatment depends on the cause and the animal's condition: it must be determined by a veterinarian. No self-medication.
Prevention
Prevention involves regular monitoring of the skin of the animals in the group, good hygiene of enclosures and equipment, as well as quarantine for any new arrival before their introduction into the group. Preventive antiparasitic treatment may be considered by the veterinarian in risky situations, particularly during transfers between establishments.
Possible complications
Without treatment, the lesions can become infected by bacteria, the animal can become very weak and lose weight. In very severe and prolonged cases, the general condition can deteriorate seriously.
When to see a veterinarian
Intense or persistent itching in a hamadryas
Appearance of crusts, redness or hairless areas on the skin
Several individuals in the group present similar skin signs
Weight loss or depression associated with skin lesions
Transmission to humans
The sarcoptic mange mite can occasionally be transmitted to humans in close contact with an infested animal, causing transient itchy skin. Nursing staff and visitors near the enclosures must follow simple hygiene precautions.
Prognosis
With early diagnosis and appropriate treatment, the prognosis is generally good. Neglected or complicated cases of secondary infection have a longer and uncertain recovery.
Frequently asked questions
Is hamadryas sarcoptic mange contagious to humans?
Yes, it can occasionally be transmitted to humans by direct contact, causing temporary itching, but the mite generally does not survive long-term on human skin.
How do I know if my hamadryas has scabies?
Only a veterinarian can confirm the diagnosis through a skin scraping examined under a microscope. Itching and scabs should alert and motivate a consultation.
Should the affected animal be isolated from the rest of the group?
Yes, temporary isolation is often recommended by the veterinarian to limit the spread to other individuals in the group.
Can sarcoptic mange come back after treatment?
Yes, reinfestation is possible if the environment is not properly disinfected or if another animal in the group remains a carrier untreated.
References
WOAH — Organisation mondiale de la santé animale (ex-OIE)
CDC — Centers for Disease Control and Prevention
Content reviewed by the TunisieVet editorial team · Updated 18 August 2026
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