Pediculus humanus and Phthirus pubis (Lice)

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Pediculus humanus and Phthirus pubis (Lice)

Pathology

Pigmented skin disorders

Vitiligo

Albinism

Acneiform skin disorders

Acne vulgaris

Folliculitis

Rosacea

Hidradenitis suppurativa

Papulosquamous and inflammatory skin disorders

Contact dermatitis

Atopic dermatitis

Lichen planus

Pityriasis rosea

Psoriasis

Seborrhoeic dermatitis

Urticaria

Keratotic skin disorders

Actinic keratosis

Vesiculobullous skin disorders

Epidermolysis bullosa

Bullous pemphigoid

Pemphigus vulgaris

Desquamating skin disorders

Erythema multiforme

Stevens-Johnson syndrome

Skin integrity disorders

Pressure ulcer

Sunburn

Burns

Frostbite

Skin infections

Cellulitis

Erysipelas

Impetigo

Necrotizing fasciitis

Human papillomavirus

Varicella zoster virus

Poxvirus (Smallpox and Molluscum contagiosum)

Coxsackievirus

Herpes simplex virus

Candida

Malassezia (Tinea versicolor and Seborrhoeic dermatitis)

Pediculus humanus and Phthirus pubis (Lice)

Sarcoptes scabiei (Scabies)

Human herpesvirus 6 (Roseola)

Parvovirus B19

Varicella zoster virus

Measles virus

Rubella virus

Skin neoplasms

Vascular tumors

Human herpesvirus 8 (Kaposi sarcoma)

Angiosarcomas

Skin cancer

Hair and nail disorders

Alopecia areata

Telogen effluvium

Onychomycosis

Integumentary system pathology review

Pigmentation skin disorders: Pathology review

Acneiform skin disorders: Pathology review

Papulosquamous and inflammatory skin disorders: Pathology review

Vesiculobullous and desquamating skin disorders: Pathology review

Bacterial and viral skin infections: Pathology review

Skin cancer: Pathology review

Viral exanthems of childhood: Pathology review

Assessments

Pediculus humanus and Phthirus pubis (Lice)

USMLE® Step 1 questions

0 / 1 complete

High Yield Notes

5 pages

Questions

USMLE® Step 1 style questions USMLE

of complete

A 15-year-old boy presents with pruritus over the chest and armpits, which developed two weeks ago. The patient is otherwise healthy. He lives in a boarding school and noticed several of his classmates had developed similar symptoms. Temperature is 37.0°C (98.6°F), pulse is 65/min, and blood pressure is 107/73 mmHg. Physical examination reveals oval-shaped yellowish structures attached to the axillary hair shafts. Multiple excoriations are noted over the torso. This patient is at increased risk for which of the following co-infections? 

Memory Anchors and Partner Content

External References

First Aid

2022

2021

2020

2019

2018

2017

2016

Lice

disease vectors p. 147, 148

head/scalp p. 158

treatment p. 197

Mites/louse treatment p. 197

Relapsing fever

lice p. 158

External Links

Summary

Pediculus humanus and Phthirus pubis are types of lice that affect humans. Pediculus humanus is commonly known as head lice and primarily infects the scalp, whereas Phthirus pubis, is commonly known as pubic lice because it infests the pubic hair. Both types of lice are small parasitic insects that live close to the human skin sucking and feeding on blood. They can cause itching, redness, and irritation in the affected areas.

Pediculus humanus is most commonly spread through direct head-to-head contact or by sharing combs, and hats, whereas Phthirus pubis is commonly spread through sexual contact, but it can also be spread through close personal contact or by sharing personal items. Treatment for lice typically involves drugs like topical benzyl alcohol to kill the lice, and prevention requires proper body hygiene.

Elsevier

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