Scabies is a contagious skin condition caused by a tiny mite called Sarcoptes scabiei. This microscopic parasite burrows into the outer layer of skin and causes intense itching. Scabies spreads easily from person to person through close contact. In this article, you will learn what causes scabies, how to spot the symptoms, and what treatment options are available to Canadians.
What Is Scabies?
Scabies is a skin infestation, not an infection. A tiny mite — too small to see without a microscope — digs into your skin and lays eggs there. Your immune system reacts to the mites and their waste, which triggers severe itching and a rash.
Scabies has affected humans for thousands of years. It is also known by other names, including sarcoptic mange, sarcoptidosis, and scabiosis. In Canada, scabies can affect anyone, regardless of age, income, or hygiene habits. It tends to spread quickly in crowded living environments, such as long-term care homes, shelters, and correctional facilities.
According to the World Health Organization, scabies affects more than 200 million people worldwide at any given time. It is considered a neglected tropical disease but also occurs regularly in temperate climates like Canada.
Types of Scabies: Human vs. Non-Human
There are two broad types of scabies, depending on how the infestation starts. Understanding the difference helps you protect yourself and your family.
Human Scabies
Human scabies spreads from one person to another through prolonged skin-to-skin contact. Shaking hands, sharing a bed, or sexual contact can all transmit the mite. The mite responsible for human scabies thrives only on human skin, so it cannot survive long away from a human host.
This is by far the most common form of scabies in Canada. Family members, caregivers, and close contacts are at the highest risk when someone in their household is infested.
Non-Human (Zoonotic) Scabies
Non-human scabies comes from contact with an infested animal, such as a dog, cat, or rabbit. The mites from animals can land on human skin and cause temporary itching. However, these animal mites cannot complete their life cycle on human skin. As a result, the symptoms are usually milder and resolve on their own within a few days once contact with the animal stops.
If your pet is scratching constantly, take them to a veterinarian. A mange treatment for your pet can prevent repeated exposure for your family.
What Causes Scabies and How Does It Spread?
Scabies spreads almost entirely through direct, prolonged skin-to-skin contact with an infested person. A quick handshake is usually not enough for transmission. However, longer contact — such as holding hands for several minutes, sharing a bed, or sexual activity — gives the mite enough time to move from one person to another.
Indirect transmission through clothing, bedding, or towels is possible but much less common. The mite can survive off a human body for only 48 to 72 hours at room temperature. Therefore, shared items pose a lower risk than direct contact.
Who Is Most at Risk?
Scabies does not discriminate. Anyone can get it. However, certain groups face a higher risk:
Residents and staff of long-term care homes and nursing facilities
Children in daycare settings
People living in crowded housing or shelters
Sexually active adults with multiple partners
Immunocompromised individuals, such as those living with HIV or receiving chemotherapy
Caregivers who provide hands-on personal care
Scabies also tends to surge in cycles. Historically, outbreaks have occurred every 30 to 40 years on a larger population scale. Smaller outbreaks happen more frequently in closed communities such as care homes and schools.
Recognising the Symptoms of Scabies
The most telling sign of scabies is intense itching, especially at night. This happens because the mites are most active in warmth, such as when you are under your bedcovers. The itching can be severe enough to disrupt your sleep and your daily life.
Symptoms usually appear two to six weeks after first exposure. If you have had scabies before, symptoms can appear within one to four days of re-exposure because your immune system already recognises the mite.
Common Signs to Look For
Intense itching that worsens at night
A pimple-like rash with small red bumps or blisters
Burrow tracks — thin, irregular lines on the skin surface, often grey or skin-coloured
Sores from scratching, which can become infected
Thick, crusted skin in severe cases (called crusted or Norwegian scabies)
Where Scabies Rash Typically Appears
The rash and burrow tracks most often appear in skin folds and between fingers. Common spots include:
Between the fingers and toes
The inner wrists and elbows
The armpits
Around the waist and beltline
Around the nipples (particularly in women)
The genitals (particularly in men)
The buttocks
In young children, scabies can also appear on the face, scalp, palms, and soles of the feet — areas that are less commonly affected in adults.
How Scabies Is Diagnosed
A healthcare provider can often diagnose scabies by looking at your skin. They will examine the rash and look for burrow tracks, which are a strong indicator of the condition. In some cases, your doctor may take a small skin scraping to look for mites or eggs under a microscope.
You do not need a specialist for a basic scabies diagnosis. Your family doctor or a walk-in clinic physician can assess your skin and recommend treatment. If you are unsure whether a walk-in clinic is available near you, Health Canada’s website offers resources to help you find local healthcare services.
Crusted Scabies: A More Serious Form
Crusted scabies, also called Norwegian scabies, is a severe form of the condition. It usually affects people with weakened immune systems. Instead of a handful of mites, a person with crusted scabies may harbour thousands or even millions of mites on their body. The skin becomes thick, scaly, and crusted. This form is highly contagious and requires aggressive treatment under medical supervision.
Treatment Options for Scabies
The good news is that scabies is very treatable. Your doctor will likely prescribe a topical cream or lotion that kills the mites. Treatment must cover the entire body from the neck down, not just the visible rash.
For detailed medical guidance on treatment options, the Mayo Clinic’s scabies treatment page provides a clear overview of the most commonly used medications.
Prescription Medications
The most common treatments prescribed in Canada include:
Permethrin cream (5%) — the most widely used first-line treatment. Apply it to clean, dry skin at night and wash it off in the morning.
Ivermectin (oral tablets) — often used for crusted scabies or when topical treatment has not worked. It requires a prescription in Canada.
Lindane lotion — an older option that is used less often today due to potential side effects. It is typically a last resort.
Coverage for these medications may vary depending on your provincial health plan. Check with your provincial drug benefit programme or your pharmacist to understand what is covered under your plan.
Treating Everyone at the Same Time
One key rule in scabies treatment: everyone in the same household must be treated at the same time, even if they show no symptoms. This prevents re-infestation after treatment. Your doctor or clinic will provide instructions for all close contacts.
Caring for Your Home and Belongings
While mites cannot survive long off the body, it is still important to clean your environment. After treatment, wash all clothing, bedding, and towels used in the previous 72 hours in hot water and dry them on a high heat setting. Items that cannot be washed should be sealed in a plastic bag for at least 72 hours. Vacuuming furniture and carpets is also a good idea.
Managing Itching After Treatment
Itching can continue for two to four weeks after successful treatment. This is a normal immune reaction, not a sign that treatment has failed. Your doctor may recommend antihistamines or a mild corticosteroid cream to relieve the discomfort during this period.
When to See a Doctor
If you notice an itchy rash that gets worse at night, see your family doctor or visit a walk-in clinic as soon as possible. Do not wait to see if it resolves on its own. Scabies will not go away without treatment, and it can spread to others in your home or workplace during that time.
Seek medical attention promptly if:
The itching is severe and disrupting your sleep
You notice unusual lines or burrow tracks on your skin
A child in your home has developed an itchy rash on the face, palms, or soles
You live with or care for someone who has been diagnosed with scabies
Your symptoms return after completing treatment
You or a family member has a weakened immune system
Walk-in clinics across Canada are well-equipped to assess and treat scabies. You do not need a referral. If you are covered under a provincial health plan, the clinic visit is typically covered. Always consult a qualified healthcare provider before starting any treatment — this article is for informational purposes only and does not replace professional medical advice.
Preventing the Spread of Scabies
Preventing scabies means reducing close skin-to-skin contact with anyone who has an active infestation. This is not always easy within families or care settings, but there are practical steps you can take.
Avoid prolonged skin contact with anyone showing signs of scabies
Do not share clothing, towels, or bedding with an infested person
Treat all household members at the same time, as directed by your doctor
Inform close contacts and sexual partners so they can be assessed and treated if needed
Follow up with your healthcare provider if symptoms return after treatment
In institutional settings like care homes or schools, outbreaks require a coordinated response. Management and healthcare staff should notify public health authorities and follow established outbreak protocols.
How do you know if you have scabies?
The most common sign of scabies is intense itching that gets worse at night. You may also notice a pimple-like rash or thin burrow tracks on the skin between your fingers, on your wrists, or around your waist. A family doctor or walk-in clinic can examine your skin and confirm the diagnosis.
Can scabies go away on its own without treatment?
No, scabies will not go away on its own. Without treatment, the mites continue to multiply and the infestation worsens over time. Scabies also remains contagious, so delaying treatment puts your household and close contacts at risk.
Is scabies contagious through clothing or bedding?
Scabies spreads mainly through prolonged skin-to-skin contact, but indirect transmission through shared clothing or bedding is possible. The mite can survive off the human body for up to 72 hours. Therefore, washing all bedding and clothing in hot water after treatment is an important step in stopping the spread of scabies.
How long does scabies treatment take to work?
Scabies treatment kills the mites quickly, but itching can persist for two to four weeks after successful treatment. This is a normal immune response and does not mean the treatment has failed. If symptoms worsen or new burrow tracks appear, contact your doctor for a follow-up assessment.
Does my whole family need to be treated for scabies?
Yes. Everyone living in the same household should be treated for scabies at the same time, even if they have no symptoms. This is essential to prevent re-infestation. Your doctor or walk-in clinic will provide instructions for all close contacts and household members.
Can you get scabies from a pet?
Yes, brief exposure to an animal with mange can cause temporary itching in humans. However, animal mites cannot complete their life cycle on human skin, so the symptoms typically resolve within a few days once contact with the animal stops. If your pet shows signs of mange, take them to a veterinarian for treatment.
Key Takeaways
Scabies is a treatable skin condition caused by the mite Sarcoptes scabiei. It spreads mainly through prolonged, direct skin-to-skin contact. The main symptoms are intense nighttime itching and a pimple
