Scabies is an itchy rash caused by mites, it spreads through close skin contact, and anyone can get it. The NHS states plainly that it has nothing to do with poor hygiene. That sentence is the reason this article exists, because the stigma is what stops people getting treated, and untreated scabies keeps spreading.

It is also far from rare. WHO estimates at least 200 million people worldwide have scabies at any one time, and more than 400 million cumulatively each year. It occurs everywhere but is most common in hot, tropical countries and in areas of high population density, a description that fits a good deal of housing in this region.

Key takeaways

  • It is nothing to do with hygiene. Anyone can get scabies.
  • It is very common, affecting at least 200 million people at any one time.
  • It favours hot climates and crowded living, which makes it locally relevant rather than exotic.
  • Everyone in the household is treated at the same time, including people with no symptoms.
  • Anyone you have had sexual contact with in the past 8 weeks should also be treated.
  • Itching continues after successful treatment. Persistent itching 2 to 4 weeks after finishing is the point at which to go back.
  • It can cause serious complications if untreated, including skin sores, septicaemia, heart disease and kidney problems.
  • Children under 2 need a doctor, not a pharmacy treatment.

How do I know it is scabies?

Intense itching, especially at night, with a raised rash or spots, usually across the body but sparing the head and neck in adults.

The NHS describes the pattern specifically. The rash often affects skin between the fingers, around the wrists, under the arms, and around the waist, groin and bottom. In older people and young children it can also appear on the head, neck, palms and soles.

An important point about appearance on different skin tones, which general advice often gets wrong: the spots may look red, but they are more difficult to see on brown or black skin, though you should be able to feel them. The rash may leave dark spots afterwards, which on brown or black skin look darker than your usual skin colour. If you are relying on photographs of scabies on white skin to decide whether you have it, you may well conclude wrongly.

People with a weakened immune system can develop crusted scabies, a rare and very contagious form with a crusted, flaky rash often on elbows, knees, hands and feet. That needs medical attention rather than a pharmacy product.

Why does everyone at home need treating?

Because the mites spread before symptoms appear, so untreated household members reinfect the treated ones.

The NHS instruction is unambiguous: everyone in your home needs to be treated at the same time, even if they do not have symptoms. Anyone you have had sexual contact with in the past 8 weeks should also be treated.

This is the step people skip, and skipping it is why scabies recurs in a household for months. Someone with no itch may still be carrying mites, and treating one person at a time simply passes the infestation around.

Two exceptions to note: do not use pharmacy treatments on children under 2 years old, who need to see a doctor; and tell the pharmacist if you are pregnant or breastfeeding.

How is it treated?

A cream or lotion applied over the whole body, plus a laundry routine on the first day.

A pharmacist will recommend a cream or lotion applied over your whole body, including scalp and face, apart from the area around the eyes. Permethrin is the usual first-line treatment. Ivermectin is used orally in some circumstances, including where topical treatment is impractical or has failed, and crotamiton is used for itch.

Alongside the medicine, on the first day of treatment:

  • Wash all bedding and clothing in the house at 60°C or higher, and use a hot dryer if possible.
  • Put anything that cannot be washed into a sealed bag for at least 3 days, until the mites die.
  • Do not have sex or close physical contact until the full course is complete.
  • Do not share bedding, clothing or towels.

The full course usually means a second application after an interval. Stopping after one because the itch improved is a common reason treatment fails.

Why am I still itching after treatment?

Because the itch is an allergic reaction to the mites, and it outlasts them.

This is the most misunderstood part, and it causes people to re-treat unnecessarily or to assume the medicine failed. Itching can persist for weeks after the mites are dead.

The NHS gives a clear threshold: go back if you have used a pharmacy treatment and your skin is still itching 2 to 4 weeks after treatment has finished. Before that point, continued itching is expected rather than alarming.

Also worth knowing: scratching the rash can cause skin infections such as impetigo, which is a separate problem needing separate treatment.

Is untreated scabies actually dangerous?

It can be, which is why “not usually serious” and “needs treating” are both true.

WHO is direct about the complications: scabies can lead to skin sores and serious complications including septicaemia, heart disease and kidney problems. Outbreaks are a major risk factor for kidney disease in the form of acute post-streptococcal glomerulonephritis, and impetigo caused by Streptococcus pyogenes is implicated in rheumatic fever and rheumatic heart disease.

That chain runs from an itchy rash, through scratching and secondary bacterial infection, to kidney and heart disease. It is the reason scabies is treated promptly rather than tolerated.

What about head lice and worms?

Both are common, neither reflects on cleanliness, and both are treated with specific products rather than general hygiene.

Head lice spread by head-to-head contact and are most common in school-age children. They do not jump or fly, and they are not a sign of dirty hair. Treatment is wet combing or a medicated lotion, and as with scabies, close contacts should be checked.

Threadworms and other intestinal worms are common in children and spread through swallowed eggs, often from hand contact. The whole household is usually treated at once for the same reason as scabies. Albendazole is a common treatment in this market; praziquantel and levamisole treat other worm types.

Anyone travelling to or from regions where intestinal parasites are endemic, and returning with persistent digestive symptoms, should mention the travel to a doctor rather than self-treating, because which parasite it is determines which medicine works.

Do and don’t

Do:

  • Treat everyone in the household at the same time.
  • Tell recent sexual contacts from the past 8 weeks.
  • Apply treatment over the whole body as directed, including scalp and face.
  • Wash bedding and clothing at 60°C on the first day of treatment.
  • Complete the full course, including any second application.
  • Go back if itching persists 2 to 4 weeks after finishing.

Don’t:

  • Don’t treat it as a hygiene problem or hide it.
  • Don’t treat only the person with symptoms.
  • Don’t use pharmacy scabies treatments on children under 2.
  • Don’t stop because the itch improved.
  • Don’t assume continued itching in the first weeks means failure.

Frequently asked questions

Can I catch scabies from my pet? No. The NHS states you cannot get scabies from pets. The human mite is a different species from the ones that affect animals.

Where is it most likely to spread? People who live or work closely together are more at risk, including nurseries, university halls of residence and nursing homes. Shared accommodation of any kind concentrates the contact that spreads it.

Do I need a doctor or is a pharmacist enough? A pharmacist can usually help, and will recommend the appropriate treatment. See a doctor for children under 2, for crusted scabies, for anyone with a weakened immune system, if you are pregnant or breastfeeding, or if itching persists 2 to 4 weeks after completing treatment.

Where to go next

The antiparasitics category lists what is stocked here, and the ingredients index maps each active ingredient to the brands containing it, which is useful because these products are sold under many different local names.

MedicForce option: our antiparasitic listings show active ingredient and strength, so a treatment recommended by a pharmacist can be matched precisely.

  • Scabies, NHS symptoms including how the rash appears on different skin tones, treatment, the household rule, the laundry routine, and when to go back.
  • Scabies, WHO the global burden, why it concentrates in hot and crowded settings, and the complications including kidney and heart disease.
  • Head lice and nits, NHS treatment and checking of close contacts.