What to do if lice are large? - briefly
Apply a prescription‑strength pediculicide as directed, then remove all nits with a fine‑toothed comb and repeat the treatment after 7–10 days. If the problem continues, consult a healthcare professional for alternative options.
What to do if lice are large? - in detail
When lice reach an abnormal size, immediate and thorough action is required to prevent discomfort, secondary infection, and further spread. Large specimens often indicate a mature infestation, which demands a more aggressive treatment plan than a light infestation.
First, isolate the affected individual to limit transmission. Wash all clothing, bedding, and personal items in hot water (minimum 130 °F/54 °C) and dry on high heat for at least 30 minutes. Items that cannot be laundered should be sealed in a plastic bag for two weeks, a period sufficient to kill lice that cannot survive without a host.
Next, apply a pediculicide that is proven effective against adult lice. Options include 1% permethrin lotion, 0.5% malathion shampoo, or a prescription‑only ivermectin formulation. Follow the manufacturer’s instructions precisely: apply to dry hair, saturate the scalp, leave the product on for the recommended duration, then rinse thoroughly. For resistant cases, a second application after 7–10 days is advisable, targeting newly hatched nymphs that survived the first treatment.
After chemical treatment, manually remove remaining insects and eggs (nits) using a fine‑toothed nit comb. Perform combing on wet, conditioned hair to reduce breakage. Start at the scalp, pull the comb through each section of hair, and wipe the comb blade after each pass. Repeat the combing process at least once daily for ten consecutive days.
Supportive measures help alleviate irritation and reduce the risk of infection. Apply a mild, non‑medicated lotion or a topical antihistamine to soothe itching. Keep the scalp clean and dry; avoid heavy hair products that could conceal nits. Monitor the scalp for signs of bacterial infection, such as redness, swelling, or pus, and seek medical attention if these appear.
Finally, educate all household members about preventive habits: avoid sharing hats, hairbrushes, or headphones; discourage head‑to‑head contact during play; and conduct regular scalp inspections, especially after school or group activities. Consistent vigilance prevents re‑infestation and ensures that any future outbreaks are detected early.