Current levels of infestation in a us college student. Phthirus pubis, the pubic louse, is a sucking arthropod transferred from hosts by close physical contact. However, it is not a legal authority for statutory or regulatory purposes. It also occasionally has been found to infest the eyelashes. Pubic lice are tiny wingless insects that infect the pubic hair area and lay eggs there. Humans are the only known hosts of this parasite, although a closely related species, pthirus gorillae, infects gorilla populations. The key clinical diagnostic feature in this case was severe itching of the pubic area, with visible nits present on pubic hairs. These lice can also be found in armpit hair, eyebrows, moustache, beard, around the anus, and eyelashes in children.
The pubic louse lives in the hair of pubic area, but can occasionally infest several hairy areas on an individual, such as under the armpits, in the beard or mustache, or on the eyebrows and. Females will lay approximately 30 eggs during their 34 week life span. The first page of the pdf of this article appears above. Bites can result in intense irritation for several days with each bite causing a red papule. Morfologi bentuk kepala segi empat, abdomen pendek dengan batas ruas yang tidak nyata lagi dan kuku yang besar dan kuat, ukuran 0,8 1,2 mm. The goal was to determine the trends of pubic lice infestation in a risk group of males and female prostitutes in an std. The crab louse or pubic louse pthirus pubis is an insect that is an obligate ectoparasite of humans, feeding exclusively on blood. Although the louse cannot jump, it can also live in other areas of the body that are covered with coarse hair, such as the eyelashes. Phthirus pubis infestation of the eyelashes jama jama. Phthirus pubis crab or pubic lice the pubic louse is grey in colour and the nit is oval, opalescent, 0.
Siklus hidup telur berwarna putih, mempunyai operkulum, 0,6 0,8 mm, disebut nits. Pubic lice typically are found attached to hair in the pubic area but sometimes are found on coarse hair elsewhere on the body for example, eyebrows, eyelashes, beard, mustache, chest, armpits, etc. Pthirus pubis definition of pthirus pubis by the free. Pediculosis pubis pp is infestation with pubic lice of the species phthirus pubis. Phthirus pubis infestation of the lashes jama jama network. They constituted the index group and were compared with 140 consecutive patients seen during the month of june 1990, who served as controls. Infestation usually leads to intense itching in the pubic area. Phthirus pubis linnaeus, bedford, onderstepoort journal of veterinary science and animal medicine 7. Full text is available as a scanned copy of the original print version. The human scabies mites scientific name is sarcoptes scabiei var.
Scabies is caused by the acarus, sarcoptes scabiei, and is a common worldwide public health. Dermoscopy in vivo for the life cycle of phthirus pubis. Pediculus humanus var capitis head louse, and pthirus pubis pubic louse table. Lice cattle louse hog louse pediculus humanus claw dorsal and ventral views of pediculus humanus dorsal and lateral views of pediculus humanus whole body view of pediculus humanus human head louse head closeup. Goldman, l phthirus pubis in capillitum, cilia et supercilia.
Phthirus pubis synonyms, phthirus pubis pronunciation, phthirus pubis translation, english dictionary definition of phthirus pubis. We report a case of unilateral phthiriasis palpebrarum with crab louse. Phthirus pubis and nits attached to the roots of the eyelashes of a 36yearold woman. Phthirus pubis infestation of the eyelashes and scalp. The species may also live on other areas with hair, including the eyelashes. Crab or pubic lice lay their eggs on coarse body hair, particularly the hair associated with the pubic regions, perianal region, thighs, abdomen, and armpits, but they will also infest a persons beard and eyelashes. Download fulltext pdf phthirus pubis in the eye article pdf available in indian journal of medical microbiology 343. Pigmented pruritic macules in the genital area mdedge.
Outbreaks in the 1970s have been recorded, but incomplete records preclude description of a definitive population cycle. Phthirus pubis infestation of the eyelids presenting as chronic. Phthirus pubis definition of phthirus pubis by the free. Itis taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. Although phthirus pubis occurs in europe, asia, africa, north america and australia, and is found on negroes as well as whites, as herein recorded, further data are required relating to the geographical distribution of the species and the races of man it infests the crablouse occurs less frequently on man than does pediculus and appears to be parasitic chiefly on persons leading an. In this era of sexual freedom, it is not surprising to see infestations of the eyelashes in the adult. Phthirus pubis as a cause of axillary pruritus jessica kim so, casey a. Infestation is usually through sexual intercourse, but it can arise from infested clothing or bedding.
An pthirus pubis in nahilalakip ha genus nga pthirus. Phthiriasis palpebrarum is an uncommon cause of blepharoconjunctivitis in which pthirus pubis infest the eyelashes. Phthirus pubis linnaeus, 1758 an pthirus pubis 2 3 in uska species han insecta nga syahan ginhulagway ni linnaeus hadton 1758. Crab lice also known as crabs, phthirus pubis, pthirus pubis, and pubic lice are parasitic insects notorious for infesting human genitals. Although phthirus pubis occurs in europe, asia, africa, north america and australia, and is found on negroes as well as whites, as herein recorded, further data. To report the case of phthirus pubis infestation of the eyelashes presenting as chronic. Pthirus pubis, the pubic or crab louse, is an insect of the order psocodea and is an ectoparasite whose only host are humans. Pubic lice most commonly infest pubic and perianal hair, but can be found in the hair of the beard, moustache, eyelashes, armpits, chest and abdomen. Edward zoltan md, in penn clinical manual of urology, 2007.
The 2001 european guideline for the management of pediculosis pubis was the main source for the present guideline. Pubic lice pthirus pubis maintain a worldwide parasitic population infesting two to over 10 percent of human populations, continuing a presence that has been constant since early evidence 10,000 years ago. These lice are much less mobile than head or body lice, they can remain attached with their mouthparts in the skin for days at a time. Humans are the only known hosts of this parasite, although the closely. A 45yearold man presented with conjunctival hyperaemia and moderate itching associated with irritation, and crusty excretions of the eyelashes in the left eye. They can easily go unnoticed, but eventually make their presence felt by intense itching, the result of hypersensitivity to their saliva as they feed on their unfortunate hosts blood. Scabies and pediculosis 1 scabies and pediculosis 2. Scabies is an itchy rash caused by a little mite that burrows in the skin surface. Infestation of the eyelashes with phthirus pubis cmaj. Phthirus pubis symptoms, causes, diagnosis, and treatment information for phthirus pubis pubic lice with alternative diagnoses, fulltext book chapters, misdiagnosis, research. All 3 are sucking lice of the phylum arthropoda, living in close association.
Phthirus definition of phthirus by medical dictionary. Pdf phthirus pubis in a sexually transmitted diseases. Pediculosis capitis and pediculosis corporis are discussed separately. Treatment is based on head lice or nits destruction benzyl benzoate 25% 8 to 12 hrs once, crotramiton 10% 1 day x 8 days and ivermectin 200 micrograms.
Treatment of phthiriasis palpebrarum and crab louse. The crab louse occurs in many parts of the world and is almost exclusively a parasite of man. Maintenance of the crab louse, pthirus pubis, in the. Pubic lice infestations pthiriasis are usually spread through sexual contact. Sir, phthiriasis palpebrarum is the most common eyelid infestation caused by phthirus pubis pubic lice, sometimes referred to as crab lice. Shanson mb, frcpath, in microbiology in clinical practice second edition, 1989. While every effort has been made to provide the most reliable and uptodate information available, ultimate legal requirements with respect to species are contained in.
The lice were removed from the eyelashes with fine forceps, and petrolatum was applied twice daily. Dermoscopy of the pubic hair demonstrated a louse clutching multiple shafts of hairs figure as well as scattered nits, confirming the presence of phthirus pubis and diagnosis of pediculosis pubis. Category for the effects and related treatment caused by crab lice also known as crabs, phthirus pubis, pthirus pubis, and pubic lice are parasitic insects notorious for infesting human genitals. Phthirus pubis, the crab louse, is a commonly seen sexually transmitted cause of infestation of the pubic hair. Dermoscopic examination found 3 stages of pthirus pubis, namely nits or eggs, nymph, and adult stages. Although phthirus pubis occurs in europe, asia, africa, north america and australia, and is found on negroes as well as whites, as herein recorded, further data are required relating to the geographical distribution of the species and the races of man it infests the crablouse occurs less frequently on man than does pediculus and appears to be parasitic chiefly on persons leading an active. A parasitic louse that infests the pubic region and causes severe itching. Pthirus pubis synonyms, pthirus pubis pronunciation, pthirus pubis translation, english dictionary definition of pthirus pubis. There have been few epidemiologic studies of pubic lice in recent times, and the exact incidence is unknown. The species may also live on other areas with hair, including the eyelashes, causing pediculosis ciliaris. Pthirus pubis definition of pthirus pubis by medical. Parasites and their nits were seen on the patients eyelashes and scalp. The biology of phthirus pubis parasitology cambridge core. Pediculosis pubis also known as crabs and pubic lice is a disease caused by the pubic louse, pthirus pubis, a parasitic insect notorious for infesting human pubic hair.
Pediculosis pubis is infestation of pubic or genital region with the pubic louse phthirus pubis crab louse. Pdf pubic lice pthirus pubis maintain a worldwide parasitic population infesting two to over 10 percent of human populations, continuing a presence. En otros idiomas suele denominarse literalmente piojos del pubis o piojo pubico. The parasites are easily identified by nits andor upon visual inspection of the organism in the.456 939 1089 869 815 1227 513 1435 735 305 1557 1332 713 28 223 1292 620 1331 655 501 1002 1064 548 1306 1216 672 459 249 939 948