Getting rid of scabies requires prescription medication that kills the mites burrowed into your skin, thorough cleaning of your environment, and simultaneous treatment of everyone in your household. A single round of treatment can work, but most people need two applications about a week apart to fully clear the infestation. Here’s exactly what that process looks like.
Why Scabies Won’t Go Away on Its Own
Scabies is caused by tiny mites that burrow into the top layer of your skin, lay eggs, and trigger an intense allergic reaction. That reaction is what causes the relentless itching, especially at night. Left untreated, the mites continue reproducing and spreading to new areas of your body and to other people through prolonged skin contact. The mites can also survive off your body for 24 to 36 hours at normal room temperature, and potentially longer in cooler, humid conditions. Researchers have recovered live mites from bed linens that remained capable of infesting a new host even after 96 hours under certain conditions.
First-Line Prescription Treatment
The standard treatment is a 5% permethrin cream, applied to every inch of skin from the neck down. You leave it on for 8 to 14 hours (most people apply it before bed and wash it off in the morning), then repeat the process about a week later. That second application catches any mites that hatched from eggs after the first round. Permethrin is effective and safe with a single application, but two treatments are the norm because eggs can survive the first dose.
An oral medication (ivermectin) is the main alternative. It works as well as permethrin cream but is taken by mouth in two doses, spaced 7 to 14 days apart. It should be taken with food to help your body absorb it properly. Your doctor may prescribe it if the cream hasn’t worked, if you have a widespread rash that makes full-body cream application difficult, or if permethrin isn’t available. It’s worth noting that reports of permethrin treatment failure have been increasing across Europe, which may lead some doctors to reach for oral treatment sooner.
How to Apply the Cream Correctly
The most common reason treatment fails isn’t drug resistance. It’s incomplete application. The cream needs to cover your entire body below the neck, including areas you might skip: between your fingers and toes, under your nails, the soles of your feet, your groin, and skin folds. For infants and young children, it also goes on the scalp, face, and neck. Use a full tube for an adult. Apply it to clean, dry, cool skin (not right after a hot shower, which can increase absorption into your bloodstream rather than keeping it in the skin where the mites live).
If you wash your hands during the 8 to 14 hour treatment window, reapply the cream to your hands immediately. The spaces between fingers are one of the most common spots for mites to burrow.
Treating Your Household and Contacts
This step is non-negotiable. Everyone living in your home and any close physical contacts need to be treated at the same time, even if they have no symptoms. Scabies can take four to six weeks to cause itching in someone who has never had it before, so a person can be infested and contagious without knowing it. If you treat yourself but your partner or housemate is silently carrying mites, you’ll get reinfested within days.
Coordinate so that everyone applies their treatment on the same night. This breaks the cycle of passing mites back and forth.
Cleaning Your Home and Belongings
Because mites can survive off your skin for a day or more, you need to decontaminate items that touched your body in the three days before treatment. The process is straightforward:
- Sheets, towels, and clothing: Wash in hot water above 50°C (122°F) for at least 10 minutes, then dry in a tumble dryer on the hottest setting for at least 20 minutes. Either step alone can kill the mites, but both together are more reliable.
- Items that can’t be washed: Seal them in a plastic bag for at least 72 hours. Since mites die within 24 to 36 hours at room temperature without a host, three days provides a comfortable margin.
- Mattresses and upholstered furniture: Vacuum thoroughly. You don’t need to steam clean or throw anything away.
You don’t need to fumigate your house or treat every surface. Scabies spreads primarily through prolonged skin-to-skin contact, not from brief contact with objects. The environmental cleaning is a precaution, not the main event.
Why You Still Itch After Treatment
This catches almost everyone off guard. Even after the mites are dead, itching can persist for up to six weeks. The itch isn’t caused by live mites. It’s your immune system reacting to the dead mites, eggs, and waste still embedded in your skin. Your body needs time to clear that debris and calm the inflammatory response.
Over-the-counter antihistamines and moisturizing creams can help manage the itch during this period. Some doctors prescribe a mild steroid cream. The key thing to know is that continued itching does not automatically mean treatment failed. New burrows, new bumps in areas that were previously clear, or itching that starts getting worse again after initially improving are the real signs of treatment failure or reinfection.
Does Tea Tree Oil Work?
Tea tree oil kills scabies mites in lab settings, with concentrations of 5 to 10% wiping them out within 10 to 60 minutes. But lab results and real-world results are different things. One clinical trial in children compared tea tree oil cream (5%) to permethrin cream and found the tea tree oil actually performed better, with a 54% cure rate compared to about 17% for permethrin in that particular study. However, a 54% cure rate still means nearly half the patients weren’t cured, and this was a small trial of 72 children. Tea tree oil has shown more promise when combined with standard medications, particularly in severe cases where mites have built up thick crusts on the skin.
If you’re considering tea tree oil, treat it as a possible add-on rather than a replacement for prescription treatment. Applying undiluted tea tree oil can irritate or burn the skin.
Crusted Scabies Requires Aggressive Treatment
Crusted scabies (sometimes called Norwegian scabies) is a severe form where the mite population explodes into the thousands or millions, compared to the 10 to 15 mites in a typical case. It usually affects people with weakened immune systems and causes thick, grayish crusts on the skin that are packed with mites. This form is highly contagious, even through brief contact, because of the sheer number of mites involved.
Treatment for crusted scabies combines both the topical cream and oral medication, often with multiple rounds of each. The crusts themselves need to be softened and removed so the medication can reach the mites underneath. This type almost always requires medical supervision and sometimes hospitalization.
How to Know Treatment Worked
Give it two to four weeks after completing your second treatment. During that time, expect itching to continue but gradually decrease. Signs that the infestation is clearing include no new bumps or tracks appearing, existing bumps fading or flattening, and nighttime itching becoming less intense over the weeks. If new burrows appear or the rash spreads to new areas after treatment, you likely need another round or a different medication. Your doctor can confirm by examining skin scrapings under a microscope, looking for mites, eggs, or waste particles.