How often should a scabies mite be treated? - briefly
Treatment is applied once, using a scabicidal cream or lotion, and a second application is recommended 7‑10 days later to eradicate newly hatched mites. This schedule ensures complete eradication of the infestation.
How often should a scabies mite be treated? - in detail
Scabies infestation requires a precise therapeutic schedule to eradicate the mite and prevent reinfestation. The standard regimen for topical permethrin 5 % cream involves a single application to the entire body, followed by a repeat dose after a period of 7–10 days. This interval corresponds to the life cycle of the mite, ensuring that newly hatched organisms, which are resistant to the initial dose, are eliminated.
For oral ivermectin, the conventional protocol prescribes an initial dose of 200 µg/kg body weight, repeated after 7 days. In cases of severe or crusted scabies, a third dose may be administered on day 14, and additional doses can be considered based on clinical response.
Key points for effective management:
- Apply the topical agent from the neck down (or entire body for infants) and leave it on for the recommended time, usually 8–14 hours, before washing off.
- Repeat the application after a week‑plus interval to target the next generation of mites.
- Administer oral medication at the same weight‑adjusted dose on day 0 and day 7; consider a third dose on day 14 for extensive disease.
- Treat all close contacts simultaneously, using the same schedule, to avoid re‑exposure.
- Wash bedding, clothing, and towels in hot water (≥ 50 °C) and dry on high heat; items that cannot be laundered should be sealed in plastic for at least 72 hours.
Monitoring for treatment success includes resolution of itching within 2–3 weeks and disappearance of burrows. Persistent symptoms after the second dose warrant re‑evaluation, possible alternative agents, or extended ivermectin courses.