Body Lice

Body lice are a type of parasitic insect that infests the human body, specifically the areas with hair, such as the scalp, pubic area, and underarms. They are also known as Pediculus humanus corporis.

Causes and Risk Factors

Body lice are usually spread through direct contact with an infested person or by sharing personal items, such as clothing, bedding, or towels, that have come into contact with the lice. Poor hygiene, overcrowding, and poor living conditions can increase the risk of getting body lice.

Symptoms

The symptoms of body lice infestation may include:

• Intense itching, especially at night
• Small, red or brown spots on the skin, which are the bites of the lice
• Scratch marks on the skin
• Presence of lice eggs (nits) or live lice in the seams of clothing or on the body

Diagnosis

Diagnosis of body lice is typically made by visual inspection of the body and clothing for signs of lice, such as nits, live lice, or eggs. A healthcare professional may also use a magnifying glass or microscope to confirm the presence of lice.

Treatment

Treatment for body lice typically involves:

• Washing and drying clothing, bedding, and towels in hot water (at least 120°F) and high heat
• Dry cleaning or sealing in a plastic bag for at least 2 weeks any items that cannot be washed
• Using over-the-counter medicated shampoos or creams that contain permethrin or pyrethrin to kill the lice
• Applying calamine lotion or hydrocortisone cream to relieve itching and reduce inflammation

Prevention

To prevent body lice, it is recommended to:

• Avoid sharing personal items, such as clothing, towels, or bedding
• Wash and dry clothing, bedding, and towels regularly
• Avoid close contact with anyone who has body lice
• Keep living areas clean and well-ventilated

Complications

If left untreated, body lice infestations can lead to secondary infections, such as impetigo or folliculitis, due to scratching and skin irritation. In rare cases, body lice can also transmit diseases, such as typhus or trench fever.