What should you do if you have lice in your head? - briefly
Apply an FDA‑approved lice treatment (shampoo or lotion) according to the label, then remove nits with a fine‑toothed comb and repeat the process after 7–10 days. Wash all clothing, bedding, and personal items in hot water or seal them in a plastic bag for two weeks to eliminate any remaining eggs.
What should you do if you have lice in your head? - in detail
If you discover head‑lice infestation, begin treatment immediately to prevent spread and reduce discomfort.
First, verify the presence of live insects and nits by parting the hair close to the scalp and examining the shafts with a fine‑toothed comb. Visible eggs attached at a 45‑degree angle to the hair confirm infestation.
Select an approved pediculicide. Over‑the‑counter shampoos or lotions containing 1 % permethrin or 0.5 % pyrethrin are the most common. Follow the product’s instructions exactly: apply to dry hair, leave for the recommended time, then rinse thoroughly. For resistant cases, a prescription‑only 0.5 % malathion or 0.05 % ivermectin preparation may be required; a healthcare professional should prescribe these.
After the initial application, repeat the treatment after 7–10 days to eliminate newly hatched nits that survived the first dose.
While the chemical treatment works, mechanical removal is essential. Use a fine‑toothed nit comb on wet, conditioned hair. Comb from the scalp outward in small sections, cleaning the comb after each pass. Perform this combing daily for at least a week, then every other day for another week to catch any missed eggs.
Clean personal items and the environment to avoid re‑infestation:
- Wash bedding, towels, and clothing used within the previous 48 hours in hot water (≥ 130 °F) and dry on high heat.
- Seal non‑washable items (e.g., hats, stuffed toys) in a sealed plastic bag for two weeks.
- Vacuum carpets, upholstered furniture, and car seats; discard the vacuum bag or clean the canister afterward.
Inform close contacts—family members, classmates, or coworkers—so they can inspect and treat themselves if necessary.
If symptoms persist after two treatment cycles, consult a medical professional. Possible causes include resistance to the chosen pediculicide or improper application. A clinician may recommend alternative agents, oral ivermectin, or a combination of treatments.
Maintain vigilance for at least one month, checking the scalp weekly, to ensure complete eradication.