How to treat lice on the body? - briefly
Use a pediculicide lotion or shampoo containing permethrin or pyrethrin, applying it to all affected skin and hair, leaving it on for the recommended time, then rinsing thoroughly; follow with washing all clothing, bedding, and personal items in hot water and drying on high heat to eliminate remaining insects. Repeat treatment after 7‑10 days to kill any newly hatched lice.
How to treat lice on the body? - in detail
Body lice infestations require a systematic approach that combines personal hygiene, pharmacologic intervention, and environmental decontamination.
Effective management begins with thorough cleansing. Daily bathing with warm water and antibacterial soap removes adult insects and eggs from the skin and clothing. After washing, dry clothing and bedding at a temperature of at least 60 °C for 30 minutes, or seal items in a plastic bag for two weeks to starve lingering lice.
Pharmacologic treatment focuses on topical agents that kill both lice and their nits. Recommended options include:
- 1 % permethrin cream applied to the entire body, left for 10 minutes, then rinsed off. Repeat after 7 days to eliminate newly hatched insects.
- 0.5 % malathion lotion, applied to dry skin, left for 8–12 hours, then washed away. Suitable for cases resistant to permethrin.
- Oral ivermectin, 200 µg/kg as a single dose, repeated after 7 days for severe or refractory infestations.
Adjunctive measures enhance efficacy:
- Trim fingernails to prevent secondary skin damage.
- Use a fine-toothed comb on damp hair to extract lice and nits, especially in areas with dense hair.
- Apply a moisturizing lotion after treatment to reduce skin irritation.
Environmental control extends beyond personal care. Wash all linens, towels, and clothing used within the previous 48 hours in hot water; items that cannot be laundered should be dry‑cleaned or stored in sealed containers for at least two weeks. Vacuum carpets and upholstered furniture thoroughly, discarding vacuum bags afterward.
Monitoring progress is essential. Re‑examine the skin and clothing 7 days after the initial treatment; persistent live insects indicate the need for a second therapeutic cycle. Document any adverse reactions to topical agents and adjust the regimen accordingly.
Preventive strategies include maintaining daily bathing habits, changing undergarments and socks regularly, and avoiding sharing personal clothing. Implementing these steps reduces the likelihood of re‑infestation and ensures long‑term control.