External Parasites in Hedgehogs: Managing Mange, Fleas, and Tick-Borne Threats in Clinical Practice

Dermatological and ectoparasitic disorders are among the most frequently encountered conditions in rescued and captive hedgehogs. Although many infestations initially appear mild, delayed diagnosis may rapidly lead to severe skin disease, anemia, debilitation, and increased zoonotic risk. 

For veterinarians involved in wildlife rehabilitation and exotic animal practice, recognizing the common ectoparasites affecting hedgehogs has become increasingly important. 

Mange and Mite Infestations 

Mite infestations are particularly significant because of their ability to cause extensive dermatological damage. Hedgehogs may be parasitized by mites belonging to the genera Notoedres, Psoroptes, and Sarcoptes¹. 

In some cases, Notoedres cati and Otodectes cynotis infestations have been associated with contact between hedgehogs and domestic cats, suggesting that interspecies transmission may occur in urban and peri-urban environments^1,2,3,4,5. 

Among these parasites, Sarcoptes spp. infections often produce the most severe clinical presentation. 

Clinical Signs Veterinarians Commonly Observe 

Affected hedgehogs may develop: 

• Intense pruritus 

• Scaling 

• Crusting 

• Spine loss 

• Weight loss 

• Progressive deterioration in body condition^1,6 

Severe mange may substantially compromise rehabilitation success if treatment is delayed. 

Although less frequently diagnosed, demodicosis caused by Demodex erinacei should also remain on the differential list in chronic dermatological cases. Clinically, affected hedgehogs may present with papules, thick crust formation, and localized skin lesions¹. 

Diagnostic Considerations 

Diagnosis of mite infestations primarily depends on microscopic examination of skin scrapings^7,8. 

Because hedgehogs naturally possess dense spines and thickened skin, obtaining adequate samples can sometimes be technically challenging during clinical examination. Performing multiple deep skin scrapings from affected regions may improve diagnostic accuracy. 

Treatment Approaches in Clinical Practice 

Treatment protocols should be selected according to parasite type and severity of infestation. 

In many exotic animal and wildlife settings, injectable ivermectin is commonly used because of its broad-spectrum efficacy against a wide variety of hedgehog parasites. Recommended doses range from 0.5–3 mg/kg administered subcutaneously². 

Topical ivermectin may additionally be useful in cases involving fleas, ticks, and mites². For sarcoptic mange and demodicosis management, amitraz baths diluted at 1:400 and applied over seven days have also been described as part of treatment protocols². 

Flea Infestations and Their Clinical Importance 

Flea infestations represent another important concern in hedgehog medicine. While species such as Archaeopsylla erinacei and Hystrichopsylla talpae are considered hedgehog-specific, these animals may also carry flea species commonly associated with dogs, cats, and birds¹. 

Clinically affected animals may present with: 

• Weakness 

• Irritation 

• Pruritus 

• Poor body condition 

• Anemia¹ 

Beyond direct irritation, flea infestations are medically relevant because they may carry zoonotic pathogens. Archaeopsylla erinacei has been associated with the detection of Rickettsia helvetica and Bartonella henselae¹. 

Tick-Borne Risks in Hedgehogs 

Tick infestations are equally important in clinical practice. Rhipicephalus spp. and Ixodes spp. are among the most prevalent tick genera identified in hedgehogs. 

Ticks commonly attach around the eyes, ears, and perianal region where spine density is lower. Heavy infestations may contribute to significant blood loss and severe anemia. 

However, the larger concern often involves vector-borne disease transmission. Hedgehog-associated ticks may harbor pathogens including: 

• Borrelia burgdorferi 

• Anaplasma phagocytophilum 

• Babesia species 

• Coxiella burnetii 

The extent of tick infestation in free-ranging hedgehogs can sometimes be severe. In one documented investigation, veterinarians recovered 959 ticks from only 24 hedgehogs, emphasizing the high ectoparasite burden these animals may carry in wildlife environments¹. 

Clinical and Public Health Relevance 

Management of ectoparasitic disease therefore extends beyond simple parasite removal. Veterinarians should evaluate affected hedgehogs for anemia, dehydration, secondary infections, and systemic illness while also considering zoonotic exposure risks for handlers and rehabilitation personnel. 

As urban wildlife interactions continue increasing, ectoparasite surveillance in hedgehogs is becoming increasingly relevant to both veterinary medicine and public health. Early diagnosis, targeted treatment, and appropriate biosecurity protocols remain essential for improving outcomes in these challenging parasitic cases. 

References 

1. Alfaia F, Jota Baptista C, Sós-Koroknai V, Hoitsy M, Sós E, Madeira de Carvalho LM. Hedgehogs’ parasitology: an updated review on diagnostic methods and treatment. Parasitologia. 2024 Mar 17;4(1):82-90. https://doi.org/10.3390/parasitologia4010007 

2. Bexton S. Hedgehogs. InBSAVA manual of wildlife casualties 2016 Dec 1 (pp. 117-136). BSAVA Library. https://www.bsavalibrary.com/content/chapter/10.22233/9781910443316.chap12?crawler=true&mimetype=application/pdf 

3. Foley J, Serieys LE, Stephenson N, Riley S, Foley C, Jennings M, Wengert G, Vickers W, Boydston E, Lyren L, Moriarty J. A synthetic review of notoedres species mites and mange. Parasitology. 2016 Dec;143(14):1847-61. https://www.laurelserieys.com/s/synthetic_review_of_notoedres_species_mites_and_mange.pdf 

4. Stevanović O, Vujanić D, Dobrijević M, Nedić D, Trbojević I. Notoedrosis in a household cat-case report. Archives of Veterinary Medicine. 2019 Dec 31;12(2):39-47. https://niv.ns.ac.rs/e-avm/index.php/e-avm/article/download/61/41 

5. Patel U, Mukherjee S. Successful treatment of Otodectes cynotis infestation in domestic African pygmy hedgehogs (Atelerix albiventris): A case report. Int. J. Vet. Sci. Anim. Husb. 2023;8:103-5. https://www.researchgate.net/profile/Soham-Mukherjee-25/publication/369155511_Successful_treatment_of_Otodectes_cynotis_infestation_in_domestic_African_pygmy_hedgehogs_Atelerix_albiventris_A_case_report/links/64916149c41fb852dd19bd0f/Successful-treatment-of-Otodectes-cynotis-infestation-in-domestic-African-pygmy-hedgehogs-Atelerix-albiventris-A-case-report.pdf 

6. Patel U, Mukherjee S. Successful treatment of Otodectes cynotis infestation in domestic African pygmy hedgehogs (Atelerix albiventris): A case report. Int. J. Vet. Sci. Anim. Husb. 2023;8:103-5. https://www.researchgate.net/profile/Soham-Mukherjee-25/publication/369155511_Successful_treatment_of_Otodectes_cynotis_infestation_in_domestic_African_pygmy_hedgehogs_Atelerix_albiventris_A_case_report/links/64916149c41fb852dd19bd0f/Successful-treatment-of-Otodectes-cynotis-infestation-in-domestic-African-pygmy-hedgehogs-Atelerix-albiventris-A-case-report.pdf 

7. Gomes-Gonçalves S, Santos-Silva S, Cruz AV, Rodrigues C, Soeiro V, Barradas P, Mesquita JR. A thorny tale of parasites: Screening for enteric protozoan parasites in hedgehogs from Portugal. Animals. 2024 Jan 21;14(2):326. https://www.mdpi.com/2076-2615/14/2/326 

8. Marks SL. Rational approach to diagnosing and managing infectious causes of diarrhea in kittens. August's Consultations in Feline Internal Medicine, Volume 7. 2015 Dec 4:1. https://pmc.ncbi.nlm.nih.gov/articles/PMC7152495/pdf/main.pdf