Scabies is treated with prescription creams that kill the mites living in your skin, sometimes combined with an oral medication for tougher cases. The standard approach works well for most people, but the itching can linger for weeks after the mites are gone, which catches many people off guard. Here’s what treatment actually looks like from start to finish.
Topical Cream: The First-Line Treatment
A prescription cream containing 5% permethrin is the most widely used treatment for scabies. You apply it to your entire body from the neck down, not just the areas where you see a rash or feel itchy. The mites burrow into skin all over, and spot-treating misses them. Leave the cream on for 8 to 14 hours (most people apply it before bed and wash it off in the morning), then repeat the application one week later.
That second application matters. The cream kills live mites effectively, but eggs already laid in your skin can hatch in the days between treatments. The second round catches newly hatched mites before they can mature and lay more eggs. Skipping it is one of the most common reasons treatment fails.
Permethrin is FDA-approved for anyone 2 months of age and older. For very young infants under 2 months, sulfur ointment in a petroleum base is considered safe. Sulfur is also one of the oldest scabies treatments still in use. Applied to the whole body for three consecutive days, sulfur ointment at concentrations between 6% and 33% is recognized as an effective alternative by European treatment guidelines. It has low toxicity and is safe during pregnancy and for young children, making it a practical option when permethrin isn’t suitable.
Oral Medication for Harder Cases
When topical treatment alone isn’t enough, or when applying cream over the entire body isn’t practical, an oral antiparasitic medication called ivermectin can be prescribed. It’s taken by mouth, typically as a single dose repeated one to two weeks later. Ivermectin works by paralyzing the mites’ nervous system.
Oral treatment is particularly useful for people who have difficulty applying cream thoroughly (such as elderly patients or those with mobility issues), for outbreaks in group living settings where many people need treatment at once, and for crusted scabies, a severe form of the disease. The safety of ivermectin in pregnant women has not been established, so it’s generally avoided during pregnancy.
Crusted Scabies Requires Aggressive Treatment
Crusted scabies, sometimes called Norwegian scabies, is a severe form that typically affects people with weakened immune systems. While ordinary scabies involves a handful of mites (usually 10 to 15 on the whole body), crusted scabies can mean thousands or even millions of mites, forming thick, crusty patches on the skin. It’s far more contagious and far harder to eliminate.
Treatment for crusted scabies combines both oral ivermectin and topical permethrin, often with multiple rounds of each. The thick crusts on the skin can shield mites from topical creams, so softening and removing the crusts (sometimes with a keratolytic agent that breaks down dead skin) is part of the process. People with crusted scabies typically need close medical follow-up to confirm the mites are fully gone.
Why You Still Itch After Treatment
This is the part that frustrates people most. Itching can persist for up to a month after successful treatment, even when every mite is dead. The itch isn’t caused by live mites at that point. It’s your immune system reacting to the dead mites, their eggs, and their waste still present in the upper layers of your skin. Your body gradually clears this debris, and the itching fades.
Over-the-counter antihistamines like diphenhydramine (the active ingredient in Benadryl) can take the edge off. For more intense itching, a doctor may prescribe a short course of oral steroids. In cases of nodular scabies, where firm, itchy bumps persist for weeks or months after treatment, steroid injections directly into the nodules are sometimes used. The key thing to know: lingering itch alone doesn’t mean treatment failed. New burrow tracks or spreading rash in a new area would be signs of ongoing infestation, but generalized itching in already-affected areas is normal and temporary.
Treating Everyone at the Same Time
Scabies spreads through prolonged skin-to-skin contact, which means household members and sexual partners are often already carrying mites before anyone develops symptoms. It can take four to six weeks after initial exposure for itching to start, so people around you may be infected without knowing it. Everyone in close contact should be treated at the same time, even if they aren’t itchy yet. Treating only the person with symptoms and ignoring household contacts is the single most common reason scabies keeps coming back.
Cleaning Your Home and Belongings
Scabies mites can’t survive long off a human body, but they can live in bedding, clothing, and towels for a couple of days. On treatment day, wash all bedding, towels, and recently worn clothing in hot water. The critical threshold is water temperatures above 50°C (122°F) sustained for at least 10 minutes, which kills both mites and their eggs. Dry everything on the hot cycle afterward.
Items that can’t be washed (stuffed animals, throw pillows, delicate fabrics) can be sealed in a plastic bag for 72 hours. Without a human host, the mites die within that window. Dry cleaning also works. You don’t need to fumigate your house or treat furniture with pesticide sprays. The mites need human skin to survive, so simply isolating items from skin contact for a few days is enough.
What to Do if Treatment Doesn’t Work
If you’re still seeing new burrows or rash spreading to new areas two to four weeks after completing both rounds of treatment, the infestation may not be fully cleared. Several things can cause this: incomplete application of the cream (missing areas like between the fingers, under the nails, the soles of the feet, or the buttocks), not treating all household contacts simultaneously, or reinfesting from untreated bedding or clothing.
In some cases, the mites may have reduced sensitivity to permethrin, which has been documented in certain regions. When standard permethrin treatment fails despite proper application, your doctor may switch to oral ivermectin, sulfur ointment, or a combination approach. A second round of the same treatment with more careful attention to full-body coverage and household coordination solves the problem for most people.