PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “Phthirus”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 19 recordsLinked to original sources

Seasonality trends of Pediculosis capitis and Phthirus pubis in a young adult population: follow-up of 20 years.

BACKGROUND: It is not mandatory to report Pediculosis capitis and Phthirus pubis in most countries; therefore, little is known about the seasonality of these infestations. METHODS: We analysed the data based on routine and mandatory reporting of every case of Pediculosis capitis and Phthirus pubis to the Army Health Branch Epidemiology Department, Israel, over the last two decades. RESULTS: The average 20-year incidence of Pediculosis capitis shows a significant rise during the warmer months (R2 = 0.692, P < 0.05) with a parallel significant decrease in the cooler months (R2 = 0.893, P < 0.05). The results for Phthirus pubis show a significantly higher person-time incidence in the winter (P < 0.001). Sensitivity analysis to investigate possible sources of heterogeneity during this time indicated that no single year was an important source of heterogeneity. CONCLUSIONS: Pediculosis capitis is more frequent in the warmer months, whereas Phthirus pubis is more dominant in the cooler months.

Adult↗

Phthirus pubis infestation of the eyelashes and scalp hairs in a girl.

A 4-year-old girl was seen because of foreign bodies on the eyelashes. Parasites and their nits were seen on the patient's eyelashes and scalp. Her parents denied having Phthirus pubis infection of the axillary, pubic, or body hair, despite confirmation of the infestation in their child. The parasites were removed and the lashes with nits were cut off at the base. The parasite was identified as P. pubis. The scalp was washed with phenothrin shampoo. One month later no P. pubis infestation was found. Removal of the parasites, cutting the lashes at the base, and using phenothrin shampoo on the scalp were effective in resolving phthiriasis.

Child, Preschool↗

[Eyelids infestation by Phthirus pubis in a boy].

A clinical case of Phthirus pubis infestation of the eyelids in an eight-year-old boy is presented. He complained of a bilateral eyelids inflammation for the last two weeks which had not healed with a daily application of a collyrium. Physical examination showed the presence of small dark spheres, of approximately 1 mm, attached to the proximal extreme of the eyelashes. A microscopical examination of these elements permitted to identify adults and eggs of P. pubis. Neither insects nor eggs were found in the scalp of the patient. Treatment consisted in the extraction of the parasite elements by means of a fine forceps after the application of liquid vaseline in the eyelashes. A total of 23 adult insects and 32 eggs was removed. The boy proceeded from a boarding school,--where none of the other 27 children was found infested--and stayed there from Monday to Friday, going home for week ends. It was impossible to contact the mother, the most probable source the patient infestation, for epidemiological and prophylactical purposes.

Animals↗

Diagnosing and treating Phthirus pubis palpebrarum.

Phthiriasis palpebrarum is an uncommon cause of blepharitis and conjunctivitis and may easily be overlooked. A high index of suspicion and careful examination of the patient's lid margins and eyelashes will lead to the proper diagnosis. Treatment is best accomplished by careful removal of the lice and nits (louse eggs) from the patient's lashes. Local application of a pediculocide such as yellow mercuric oxide N.F. 1% ophthalmic ointment applied twice daily for one week or 0.25% physostigmine (Eserine) ointment applied twice daily for a minimum of ten days, to the lid margins should be considered when the total removal of Phthirus pubis and nits is not possible mechanically. Body hair should be examined for infestation with lice and treated with gamma benzene hexachloride shampoo. This medication should be used with caution in infants, children and pregnant women. Family members, sexual contacts, and close companions should be examined and treated appropriately; clothing, linen and personal items should be disinfected with heat of 50 degrees C for 30 minutes.

Adult↗

Treatment of infestation with Phthirus pubis: comparative efficacies of synergized pyrethrins and gamma-benzene hexachloride.

In recent years there has been a steady increase in the incidence of infestation with Phthirus pubis, a sexually transmitted louse. A recently introduced nonprescription liquid pediculicide, whose major ingredient is 0.3% pyrethrins synergized by 3.0% piperonyl butoxide (RiD), was compared for efficacy and safety with a prescription-only pediculicidal lotion whose major ingredient is 1% gamma-benzene hexachloride (Kwell). Thirty adult man and women with P. pubis infestation were assigned randomly to treatment with either the synergized pyrethrins or gamma-benzene hexachloride. A single 10-min application of the synergized-pyrethrin liquid produced the same results as a single 12-hr application of the gamma-benze hexachloride lotion: total eradication of adult lice and nymphs, cessation of pruritus, and no treatment-induced side effect. A follow-up visit a week after treatment verified all eradications.

Adolescent↗

Scalp infestation by Phthirus pubis in a 6-week-old infant.

This case report describes a 6-week-old infant with a Phthirus pubis infestation of the scalp. It is believed this patient is the first reported case in this age group. Treatment is discussed, as are the family dynamics that put this infant at risk. The authors address the possible association between infestation and child abuse.

Adult↗

In vitro control of Phthirus pubis with four pediculocides: Eurax, Elimite, Licid and Benzanil.

Phthirus pubis, Linnaeus 1758 that causes phthiriasis is a common infestation disease. However, it is commonly be acquired in jails, brothels, and other similar places. The efficacy of four insecticides commercially known as Eurax, Elimite, Licid, and Benzanil was evaluated for controlling pubic lice in vitro. The four test insecticides proved to be very effective. However, they differed in time needed for causing 100 percent mortality and they could be arranged descendingly as follows: Licid, Eurax, Elimite, and Benzanil.

Animals↗

Phthirus pubis as a predictor for chlamydia infections in adolescents.

BACKGROUND: Providers not skilled in the evaluation of sexually transmitted infections (STIs) may treat pubic lice infestation without considering other organisms. This study compared the rate of chlamydia and gonorrhea infections in adolescents with and without pubic lice. GOAL: The goals of the study were to compare the rate of chlamydia and gonorrhea infections between adolescents infested or not infested with pubic lice and to evaluate lice infestation as a predictor for concurrent chlamydia or gonorrhea infection. STUDY DESIGN: A retrospective chart review of sexually active adolescents at a juvenile detention center in the Midwest between July 1998 and June 2000 was conducted. The index group was 62 adolescents with pubic lice screened for concurrent STIs. The control group included 201 randomly selected adolescents without pubic lice who underwent STI screening. RESULTS: In the entire study population (263 subjects), there were 60 cases of chlamydia (23% of all subjects) and 29 cases of gonorrhea (11%). Neisseria gonorrhoeae infection was present in 18% of index subjects and 9% of controls. Chlamydia trachomatis infection was noted in 39% of index subjects and 18% of controls. Pubic lice infestation predicted C trachomatis infection (odds ratio = 3.31). CONCLUSIONS: Pubic lice infestation is predictive of a concurrent C trachomatis infection in this population. Adolescents infested with pubic lice should be screened for other STIs, including chlamydia and gonorrhea.

Adolescent↗

Phthirus pubis in a sexually transmitted diseases unit: a study of 14 years.

BACKGROUND: There have been few epidemiologic studies of pubic lice in recent times, and the exact incidence is unknown. GOAL: The goal was to determine the trends of pubic lice infestation in a risk group of males and female prostitutes in an STD unit in Spain. STUDY DESIGN: This was a prospective 14-year study, from 1988 to 2001, of all patients attending the STD unit in Gijón (Asturias, Spain), investigating crab lice and other STDs. RESULTS: One hundred ninety-seven patients (2.2%) had pubic lice, with a male/female proportion of 1.8/1. The yearly infestation rate ranged from 1.3% to 4.6%. The mean age was 30.3 years, and 18.8% of patients were older than 35 years. There were more cases involving men who had sex with men (MSM) (P < 0.001) than those involving heterosexual men. Reinfestation occurred in 7.6% of patients, more often in males (P < 0.05) and mainly in MSM (P < 0.01). CONCLUSION: Infestation rates were stable during the period of study, with more older patients involved than reported previously, and infestation frequently was associated with STDs. MSM were infested and reinfested more often than heterosexual men, and in general reinfestations occurred more frequently in males than in females.

Adolescent↗

[Hair infestation by Phthirus pubis (Anoplura: Pediculidae)].

A case of lice infestation of the hair in a 24 year-old man was reported. After the entomological identification of adults and immature stages of the vector; it was confirmed that the only existing parasite was Phtihirus pubis Linnaeus 1758, a hematophagous insect that usually infests pubis, armpit, eyelids, and other parts of the body but is rarely found in the head.

Adult↗