What to do if a louse bites? - briefly
Clean the bite with mild soap and water, then apply an anti‑itch or anti‑inflammatory topical such as hydrocortisone. Monitor for signs of infection and consult a healthcare professional if redness, swelling, or worsening symptoms develop.
What to do if a louse bites? - in detail
A louse bite usually appears as a small, red papule that may itch or become inflamed. Immediate care focuses on relieving discomfort, preventing infection, and removing the insects.
First, cleanse the area with mild soap and lukewarm water. Pat dry with a clean towel; avoid rubbing, which can aggravate the skin. Apply a topical antihistamine or a corticosteroid cream to reduce itching and swelling. If the bite shows signs of infection—such as increasing redness, warmth, pus, or fever—seek medical evaluation promptly.
To eliminate the source, treat the entire head or body where lice are present. Recommended measures include:
- Fine‑toothed comb: Run a nit comb through damp hair from scalp to ends, cleaning the comb after each pass.
- Pediculicide shampoo: Use an FDA‑approved product containing permethrin 1 % or pyrethrin, following the label’s timing and repeat‑treatment instructions.
- Environmental control: Wash bedding, clothing, and personal items in hot water (≥ 130 °F/54 °C) and dry on high heat for at least 30 minutes. Seal non‑washable items in a sealed bag for two weeks.
After treatment, re‑examine the skin daily. Apply soothing lotions, such as calamine or aloe vera gel, to alleviate residual irritation. Maintain regular combing for two weeks to catch any newly hatched nits.
If symptoms persist beyond a week despite proper care, or if an allergic reaction develops (e.g., hives, difficulty breathing), obtain professional medical assistance without delay.