{"id":35752,"date":"2024-06-05T12:29:30","date_gmt":"2024-06-05T10:29:30","guid":{"rendered":"https:\/\/petsvetcheck.de\/krankheiten-und-stoerungen\/hund\/pedikulose-parasitaere-infektion-mit-laeusen-laeusebefall\/"},"modified":"2026-08-09T13:04:55","modified_gmt":"2026-08-09T11:04:55","slug":"pediculosis-parasitic-infection-with-lice-lice-infestation","status":"publish","type":"krankheit","link":"https:\/\/petsvetcheck.de\/en\/diseases-and-disorders\/dog\/pediculosis-parasitic-infection-with-lice-lice-infestation\/","title":{"rendered":"Lice Infestation in Dogs (Pediculosis)"},"content":{"rendered":"","protected":false},"featured_media":0,"template":"","krankheitsort":[138],"haufigkeit":[136],"organsystem_krankheiten":[228,208],"class_list":["post-35752","krankheit","type-krankheit","status-publish","hentry","krankheitsort-haut-fell-en","haufigkeit-b-en","organsystem_krankheiten-infections-parasites","organsystem_krankheiten-skin","entry"],"acf":{"synonyme":"","synonyme_en":"Lice Infestation","titel_en":"Pediculosis","weitere_suchbegriffe":"","triage":"green","triage_begruendung":"Lice infestation is rare and usually mild; ectoparasiticides and environmental cleaning are sufficient.","definition":"Pediculosis in dogs is a parasitic infection caused by lice. These small insects live on the dog\u2019s skin surface and feed on blood, skin flakes, or other bodily fluids. ","ursachen":"Lice are wingless insects that spread from one host to another through direct contact. There are two main types of lice that can infest dogs: blood-sucking lice (Anoplura) and chewing lice (Mallophaga). Blood-sucking lice feed on the host\u2019s blood, while chewing lice feed on skin flakes and other superficial materials.  \n\nThe life cycle of a louse consists of three stages: egg, nymph, and adult louse. The eggs, also called nits, are attached to the host\u2019s hair and hatch into nymphs after about a week. These undergo several molts before maturing into adult lice, which are then able to reproduce. The entire life cycle takes about three to four weeks.   \n\nLice are highly specific parasites, meaning they typically feed only on a particular host type. Therefore, lice that infest dogs are normally not able to infect humans or other animals. Lice infestation occurs more frequently in environments where many dogs live in close quarters, such as kennels or shelters.  ","auswahl_symptome_rot":[33688,33774,33984,34079,33638,33658],"auswahl_symptome_blau":[34180,34311,33546,34270,34240],"auswahl_symptome_grun":[33933,33946,33332],"erganzungen_zu_symptomen":"The most common symptoms of a lice infestation in dogs are Itching and discomfort. Dogs with pediculosis often scratch and bite themselves intensely to relieve the Itching. This can lead to skin irritation, Inflammatory conditions, and even secondary Skin infections.  \n\nWith severe infestation, Hair loss may occur, especially in areas that have been heavily scratched or bitten. In some cases, small red papules or Crusts may also be visible on the skin. With blood-sucking lice, anemia can occur, especially in young or weakened dogs.  \n\nTo detect lice themselves, you need to examine the dog\u2019s hair carefully. The lice are small but visible to the naked eye and appear as tiny moving dots on the skin or in the coat. The nits are visible as small white or yellowish eggs attached to the hair shafts.  ","zusammenfassung":"Pediculosis in dogs is a parasitic infestation with lice\u2014wingless insects that spread through direct contact. There are two main types of lice that infest dogs: blood-sucking lice that feed on the dog\u2019s blood, and chewing lice that feed on skin flakes. A louse\u2019s life cycle includes the stages egg, nymph, and adult louse and takes about three to four weeks. Lice are specialized parasites and usually infest only their specific hosts, which is why they normally do not infest humans.   \n\nSymptoms of lice infestation include Itching, poor coat quality, Scratching, and Hair loss, especially around the ears, neck, and shoulders. In rare cases, anemia may occur. Diagnosis is made by the veterinarian through a thorough examination of the dog\u2019s coat and skin, often using a magnifying glass or microscopic examinations. Blood tests can provide additional information about the animal\u2019s health status.   \n\nTreatment includes insecticidal shampoos, sprays, or spot-on treatments that kill all stages of lice. It is important to thoroughly clean the dog\u2019s environment to prevent reinfection. For Skin infections, antibiotics or anti-inflammatory medications may be required. The prognosis is generally good if the infestation is detected and treated early. Regular grooming and body checks, as well as a clean environment, help prevent infestation.    ","diagnose":"Diagnosis of lice infestation is typically made through a thorough physical examination of the dog. The veterinarian will carefully examine the dog's coat and skin to look for adult lice or nits. A magnifying glass can be helpful to make the parasites more visible.  \n\nIn addition, the veterinarian may take a sample of fur or skin to examine it under a microscope. This can help identify the type of lice and rule out other possible causes of the symptoms. \n\nIn some cases, blood tests may also be performed, especially if there are signs of anemia or other health problems. These tests can help assess the dog\u2019s overall health and identify any concurrent conditions. ","behandlung":"Treatment of pediculosis in dogs typically involves the use of insecticidal shampoos, sprays, or spot-on treatments specifically designed to kill lice. It is important to follow the veterinarian\u2019s instructions carefully and continue treatment for the entire recommended period to ensure that all stages of lice, including nits, are killed. \n\nAdditionally, it is important to thoroughly clean the dog\u2019s environment. Bedding, blankets, pillows, and other items the dog has come into contact with should be washed or discarded to prevent reinfection. Regular vacuuming and cleaning of living areas can also help eliminate remaining lice.  \n\nIn cases of secondary Skin infections or other health problems, the veterinarian may prescribe additional treatments such as antibiotics or anti-inflammatory medications. These help relieve symptoms and promote skin healing. ","prognose":"The prognosis for dogs with pediculosis is usually very good, especially if the infection is detected and treated early. With appropriate treatment and care, most dogs recover fully and show no long-term health problems. \n\nIn rare cases, particularly with heavy infestation or in dogs with a weakened immune system, it may take longer for all symptoms to disappear. It is important to follow the veterinarian's instructions and conduct regular follow-up examinations to ensure that treatment is effective and no reinfection occurs. ","ausblick_auf_aktuelle_forschung":"<div class=\"flex flex-col text-sm pb-25\"><section class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [&:has([data-writing-block])>*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-69e25e16-a06c-83eb-81c7-b2046a680748-8\" data-testid=\"conversation-turn-52\" data-scroll-anchor=\"true\" data-turn=\"assistant\">\n<div class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\">\n<div class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\">\n<div class=\"flex max-w-full flex-col gap-4 grow AIPRM__relative\">\n<div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+&]:mt-1\" dir=\"auto\" tabindex=\"0\" data-message-author-role=\"assistant\" data-message-id=\"eb281212-5e3c-4bf1-9190-9b7658887421\" data-message-model-slug=\"gpt-5-4-thinking\" data-turn-start-message=\"true\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden\">\n<div class=\"markdown prose dark:prose-invert w-full wrap-break-word light markdown-new-styling\">\n<p data-start=\"0\" data-end=\"671\">Pediculosis is an infestation with lice, usually head lice. Medically, it is often not a serious disease, but it remains a relevant problem due to Itching, secondary infections, stigmatization, and recurring outbreaks. The most important research outlook today is not the description of the parasite itself, but the question of why treatments fail more often than they used to. A key reason is increasing resistance to classic insecticides, especially pyrethroids. (<a class=\"decorated-link\" href=\"https:\/\/www.cdc.gov\/lice\/about\/head-lice.html\" target=\"_new\" rel=\"noopener\" data-start=\"544\" data-end=\"600\">cdc.gov<\/a>, <a class=\"decorated-link\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/37619415\/\" target=\"_new\" rel=\"noopener\" data-start=\"602\" data-end=\"670\">pubmed.ncbi.nlm.nih.gov<\/a>)<\/p>\n<p data-start=\"673\" data-end=\"1164\">A major field of research is therefore monitoring resistance. Molecular methods can detect so-called kdr mutations, i.e., genetic changes that reduce the effectiveness of certain lice treatments. This makes it possible to better assess regionally which active ingredients are still useful and where alternative strategies become necessary. (<a class=\"decorated-link\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/37619415\/\" target=\"_new\" rel=\"noopener\" data-start=\"1025\" data-end=\"1093\">pubmed.ncbi.nlm.nih.gov<\/a>, <a class=\"decorated-link\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/31568920\/\" target=\"_new\" rel=\"noopener\" data-start=\"1095\" data-end=\"1163\">pubmed.ncbi.nlm.nih.gov<\/a>)<\/p>\n<p data-start=\"1166\" data-end=\"1720\">In parallel, research is focusing on non-neurotoxic treatments, such as physically acting products, improved combing strategies, and sensible public health communication to avoid unnecessary fear, overtreatment, and exclusion. The genomics of lice is also becoming increasingly interesting because it helps to better understand outbreaks, transmission routes, and the development of resistance. (<a class=\"decorated-link\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/31568920\/\" target=\"_new\" rel=\"noopener\" data-start=\"1593\" data-end=\"1661\">pubmed.ncbi.nlm.nih.gov<\/a>, <a class=\"decorated-link\" href=\"https:\/\/www.cdc.gov\/lice\/about\/head-lice.html\" target=\"_new\" rel=\"noopener\" data-start=\"1663\" data-end=\"1719\">cdc.gov<\/a>)<\/p>\n<p data-start=\"1722\" data-end=\"1875\" data-is-last-node=\"\" data-is-only-node=\"\">Overall, the outlook is good: research is clearly moving toward resistance-based, targeted, and less burdensome treatment concepts.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"z-0 flex min-h-[46px] justify-start\"><\/div>\n<div class=\"mt-3 w-full empty:hidden\">\n<div class=\"text-center\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section><\/div>\n<div class=\"pointer-events-none h-px w-px absolute bottom-0\" aria-hidden=\"true\" data-edge=\"true\"><\/div>","zusatzlicher_inhalt_im_hauptteil":"To prevent lice infestation in dogs, it is important to perform regular grooming and physical examinations. Make sure to brush your dog regularly and look for signs of parasites, especially if he comes into contact with other dogs. \n\nIn situations where many dogs live together in close quarters, such as shelters or breeding facilities, regular checks and preventive treatments should be considered. The use of prophylactics can help reduce the risk of lice infestation. \n\nLikewise, the dog\u2019s environment should be kept clean and free of parasites. Regular cleaning of sleeping areas and living spaces can help minimize the risk of infection. If lice infestation is suspected, it is important to act quickly and consult a veterinarian to ensure appropriate treatment.  ","haufig_gestellte_fragen_faqs":"","literaturangaben":"<ul>\n \t<li>European Scientific Counsel Companion Animal Parasites. (2024). Control of ectoparasites in dogs and cats (ESCCAP Guideline 3, 7th ed., version 4). ESCCAP.  https:\/\/www.esccap.org\/guidelines\/gl3\/<\/li>\n \t<li>Mihalca, A. D., Deak, G., Panait, L. C., Rabei, \u0218., & Beugnet, F. (2022). Efficacy of afoxolaner (NexGard\u00ae) against natural infestations with Trichodectes canis in dogs under field conditions. Parasites & Vectors, 15, Article 317. https:\/\/doi.org\/10.1186\/s13071-022-05428-y<\/li>\n \t<li>Kohler-Aanesen, H., Saari, S., Armstrong, R., P\u00e9r\u00e9, K., Taenzler, J., Zschiesche, E., & Heckeroth, A. R. (2017). Efficacy of fluralaner (Bravecto\u2122 chewable tablets) for the treatment of naturally acquired Linognathus setosus infestations on dogs. Parasites & Vectors, 10, Article 426.   https:\/\/doi.org\/10.1186\/s13071-017-2344-9<\/li>\n \t<li>Gunnarsson, L., Christensson, D., & Palm\u00e9r, E. (2005). Clinical efficacy of selamectin in the treatment of naturally acquired infection of sucking lice (Linognathus setosus) in dogs. Journal of the American Animal Hospital Association, 41(6), 388\u2013394.   https:\/\/doi.org\/10.5326\/0410388<\/li>\n \t<li>Hanssen, I., Mencke, N., Asskildt, H., Ewald-Hamm, D., & Dorn, H. (1999). Field study on the insecticidal efficacy of Advantage\u00ae against natural infestations of dogs with lice. Parasitology Research, 85, 347\u2013348.   https:\/\/doi.org\/10.1007\/s004360050560<\/li>\n \t<li>Endris, R. G., Reuter, V. E., Nelson, J., & Nelson, J. A. (2001). Efficacy of a topical spot-on containing 65% permethrin against the dog louse, Trichodectes canis (Mallophaga: Trichodectidae). Veterinary Therapeutics, 2, 135\u2013139.  <\/li>\n \t<li>Pollmeier, M., Pengo, G., Jeannin, P., & Soll, M. (2002). Evaluation of the efficacy of fipronil formulations in the treatment and control of biting lice, Trichodectes canis (De Geer, 1778) on dogs. Veterinary Parasitology, 107, 127\u2013136.  <\/li>\n \t<li>Shanks, D. J., Gautier, P., McTier, T. L., Evans, N. A., Pengo, G., & Rowan, T. G. (2003). Efficacy of selamectin against biting lice on dogs and cats. Veterinary Record, 152(8), 234\u2013237.   https:\/\/doi.org\/10.1136\/vr.152.8.234<\/li>\n<\/ul>","symptome_ausgeblendet":"","erganzungen":"","faq":[{"frage":"1. What is pediculosis in dogs?","antwort":"Pediculosis is an infestation with lice. In dogs, two species are most common: the chewing louse (Trichodectes canis) and the blood-sucking louse (Linognathus setosus). Both live permanently on the host and are strictly host-specific, meaning they do not infest other animal species or humans.  "},{"frage":"2. How do dogs become infected?","antwort":"Transmission occurs through direct animal Contact or via shared brushes, collars, and sleeping areas. Particularly affected are puppies, old and weakened dogs, as well as dogs from large populations or shelters. An infestation is often an indication of poor care or a weakened immune system.  "},{"frage":"3. What Symptoms occur?","antwort":"Typical signs are severe Itching, Restlessness, Scratching and biting at affected areas, a dull coat with dandruff, Hair loss, and in extreme cases anemia due to Linognathus setosus. On close inspection, lice and their eggs (nits) can be seen on the hair, especially around the ears, head, and shoulder area. "},{"frage":"4. How is the diagnosis made?","antwort":"Diagnosis is made by direct inspection with a magnifying glass or by applying a transparent adhesive tape strip to the coat, which is then assessed under the microscope. The nits adhere firmly to the hair, which distinguishes them from skin flakes. "},{"frage":"5. How is a lice infestation treated?","antwort":"Modern antiparasitics such as fipronil, selamectin, imidacloprid, or isoxazolines (fluralaner, sarolaner, afoxolaner, lotilaner) work reliably. A single treatment kills the adult lice; after 14 days, the treatment should be repeated to catch the larvae that have hatched in the meantime. "},{"frage":"6. Do all dogs in a household need to be treated?","antwort":"Yes, all dogs that have been in Contact must be treated, even if they show no symptoms themselves. Cats and other pets are not infested by dog lice, nor are humans. Treating these animals as well is therefore not necessary.  "},{"frage":"7. Does the environment need to be treated?","antwort":"Since lice survive only a few days outside the host, thorough cleaning of bedding, blankets, and brushes at 60\u00b0C, or preventing their use for at least a week, is sufficient. A chemical environmental spray like for fleas is not required. "},{"frage":"8. Is pediculosis contagious to humans?","antwort":"No. Dog lice are strictly host-specific and cannot establish themselves on humans. Human lice, in turn, do not infest dogs. Fear of mutual transmission is therefore unfounded.   "},{"frage":"9. What complications can occur?","antwort":"Severe Itching leads to self-trauma, Skin inflammation, and secondary infections with bacteria or yeasts. With heavy infestation with Linognathus setosus, significant anemia can develop, especially in puppies. Chewing lice can transmit Dipylidium caninum as an intermediate host.  "},{"frage":"10. What is the prognosis?","antwort":"The prognosis is very good. With modern antiparasitics, the infestation resolves reliably. What\u2019s important is monitoring coat condition in the following weeks and the regular use of suitable ectoparasitics when risk is increased, for example in dogs kept in group housing.  "}],"faq_html":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Lice Infestation in Dogs (Pediculosis) in dogs<\/title>\n<meta name=\"description\" content=\"Learn more about pediculosis (parasitic infestation with lice): symptoms, treatment, and prevention for humans and animals.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/petsvetcheck.de\/en\/diseases-and-disorders\/dog\/pediculosis-parasitic-infection-with-lice-lice-infestation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Lice Infestation in Dogs (Pediculosis)\" \/>\n<meta property=\"og:description\" content=\"Learn more about pediculosis (parasitic infestation with lice): symptoms, 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