Pediculosis Pubis

Pediculosis pubis, also known as crabs or pubic lice, is a parasitic infestation of the pubic area caused by the crab louse (Pthirus pubis).

Causes and Transmission

Pediculosis pubis is usually spread through direct skin-to-skin contact with an infected person, typically during sexual activity. It can also be transmitted through sharing of personal items such as towels, bedding, or clothing that have come into contact with an infected person.

Symptoms

The symptoms of pediculosis pubis may include:

  • Intense itching in the pubic area, especially at night
  • Visible lice or eggs (nits) in the pubic hair
  • Small, bluish-gray spots on the skin (due to the louse's bites)
  • Irritation and inflammation of the affected area

Diagnosis

Pediculosis pubis is typically diagnosed through a visual examination of the pubic area, where the presence of lice or eggs can be seen. A magnifying glass or microscope may be used to confirm the diagnosis.

Treatment

Treatment for pediculosis pubis usually involves the use of over-the-counter (OTC) medications such as:

  • Permethrin cream rinse (1%)
  • Pyrethrin shampoo
  • Lindane shampoo (although this is less commonly used due to potential side effects)

It is essential to follow the instructions carefully and complete the full treatment course to ensure that all lice and eggs are eliminated. Additionally, it is recommended to:

  • Wash and dry clothing, bedding, and towels in hot water and high heat
  • Vacuum carpets and furniture, especially in areas where the infected person has been
  • Avoid sharing personal items

Prevention

To prevent pediculosis pubis, it is recommended to:

  • Avoid direct skin-to-skin contact with an infected person
  • Avoid sharing personal items such as towels, bedding, or clothing
  • Use protective measures during sexual activity, such as condoms
  • Regularly wash and dry clothing, bedding, and towels in hot water and high heat

Complications

If left untreated, pediculosis pubis can lead to secondary infections, such as bacterial or fungal infections, due to scratching and irritation of the affected area.

Frequently Asked Questions (FAQs)

What is Pediculosis pubis?
It is an infestation of pubic lice in the genital area.

How is Pediculosis pubis typically transmitted?
Through direct skin-to-skin contact with an infected person, usually during sexual activity.

What are the symptoms of Pediculosis pubis?
Itching, redness, and visible lice or eggs in the pubic area.

Can Pediculosis pubis be treated at home?
Over-the-counter medications are available, but it is recommended to consult a doctor for proper treatment.

What are the common treatments for Pediculosis pubis?
Topical creams or shampoos containing permethrin or pyrethrin, and washing clothing and bedding in hot water.

Can Pediculosis pubis be prevented?
Possibly, by avoiding direct skin-to-skin contact with infected individuals and using protective measures during sexual activity.

Are pubic lice a sign of poor hygiene?
No, anyone can get pediculosis pubis, regardless of their hygiene habits.

Can Pediculosis pubis be spread through contaminated objects?
Possibly, through shared towels, bedding, or clothing that has come into contact with an infected person.

How long does it usually take to get rid of Pediculosis pubis?
Typically 1-2 weeks with proper treatment and follow-up care.

Should I see a doctor if I think I have Pediculosis pubis?
Yes, for proper diagnosis and treatment, as well as to rule out other possible conditions.

Article last updated on: 18th October 2025.
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