Phthirus pubis usually transmitted by sexual intercourse.
Can be transmitted by close personal contact.
Pediculosis pubis is an infestation of the pubic hair by the ectoparasite Phthirus pubis, commonly known as the crab louse.
This condition is typically transmitted through sexual contact, although it can also spread through infested clothing or bedding.
The primary symptom is itching in the pubic region, which is caused by the lice feeding on blood.
Diagnosis is confirmed by the visualization of live lice or nits (eggs) on the pubic hair.
Permethrin 1% cream or pyrethrins with piperonyl butoxide are first-line treatments for pediculosis pubis.
These treatments should be applied to the affected area and washed off after 10 minutes.
Resistance to these agents is possible, and in such cases, alternative treatments such as malathion 0.5% lotion or oral ivermectin may be considered.
Patients diagnosed with pediculosis pubis should also be evaluated for other sexually transmitted infections.
Lice and nits located primarily on pubic hair , but can be seen on other body parts.
In children eyelashes and scalp can be involved.
Presentation with pruritus.
Intracutaneous hemorrhages manifested as blue macules are often seen.
Treated as for pediculosis capitis.
Bedding and clothing should be decontaminated or removed for at least 2 weeks.
Sexual partners exposed within in one months should be treated.