What should be done if nothing works against lice? - briefly
Consult a healthcare provider for prescription medication and professional lice‑removal services. Follow the provider’s instructions, clean personal belongings, and repeat treatment as recommended to eliminate the infestation.
What should be done if nothing works against lice? - in detail
When over‑the‑counter shampoos, lotions, or combs fail to eliminate a head‑lice infestation, the next actions must be systematic and medically supervised.
First, verify the presence of live lice or viable eggs. Examine the scalp under bright light, using a fine‑toothed lice comb. If no insects are found, consider alternative diagnoses such as dermatitis or fungal infection, and consult a dermatologist.
If live parasites are confirmed, schedule an appointment with a healthcare professional. A physician can prescribe stronger topical agents containing benzyl alcohol, ivermectin, or malathion, which are unavailable without a prescription. These medications often require a specific application schedule and may be combined with a second‑dose treatment after 7–10 days to target newly hatched nymphs.
In cases where prescription options are contraindicated—e.g., allergy, pregnancy, or young children—oral ivermectin may be administered under medical supervision. Dosage is weight‑based and typically given as a single dose, with a repeat after one week.
Environmental control complements pharmacologic therapy. Wash all bedding, clothing, and personal items used within the previous 48 hours in hot water (minimum 130 °F/54 °C) and dry on high heat. Items that cannot be laundered should be sealed in plastic bags for two weeks, depriving lice of a host. Vacuum carpets and upholstered furniture thoroughly; discard vacuum bags afterward.
For persistent infestations, a professional lice‑removal service may employ specialized equipment, such as heated combs or controlled‑temperature treatments, to kill insects without chemicals. These services often include follow‑up inspections to confirm eradication.
Finally, educate all household members about avoidance of head‑to‑head contact, sharing of personal items, and regular scalp checks. Document treatment dates and outcomes to provide a clear timeline for healthcare providers if re‑evaluation becomes necessary.