Human Body Louse
Pediculus humanus corporis
Quick ID Markers
Habits & Biology
Lives and lays eggs (nits) in the seams of clothing and bedding, feeding on the host only to take blood meals. Spreads through direct contact or sharing infested clothing/bedding. Vector of typhus, trench fever, and relapsing fever.
Typical Hiding Areas
Clothing seams, waistbands, collar areas, and bedding seams — not in hair.
Signs of Activity
🗓️ Seasonality
Year-round. Associated with crowded, unsanitary living conditions and lack of access to clean clothing.
⚠️ Mistaken Identity
🧪 Treatment Plan
Body lice live in clothing, not on the body — treatment focuses on laundering all clothing and bedding rather than applying insecticide to skin.
If there is concern about disease transmission (typhus symptoms, fever), seek medical attention immediately.
Wash all clothing, bedding, towels, and fabric items in hot water (130°F+) and dry on high heat for at least 20 minutes. This kills all lice and nits.
Prevention After Treatment
- •Maintain regular laundering of clothing and bedding
- •Avoid sharing clothing, bedding, or towels
- •Access to regular bathing and clean clothing is the primary preventive measure