Infestation by lice

Cause

• Pediculosis humanus capitis (head lice), Pediculosis humanus corporis (body lice), Phthirus pubis (pubic lice)

• Usually transmitted directly by person-to-person contact but may also be transmitted indirectly via the clothing, towels and bedding of infested persons

Clinical features

• Severe itching of affected areas, scratch marks
• Secondary bacterial infection

Differential diagnosis

• Scabies

Management
HC2

Preferably shave the affected area

Paint the affected body surface with benzyl benzoate application (BBA) 25%

Repeat after 24 hours

Treat all household contacts at the same time

Note

Head lice:

• Do not use BBA in children <2 years

- it is very irritant to the eyes

• If the head is not shaved, ensure that the BBA is massaged well into the scalp

• Soak all brushes and combs in BBA for at least 2 hours

Pubic lice:

• Treat all sexual partners at the same time

Prevention

• Health education on improving personal hygiene by regular bathing, washing of clothes, etc