Athlete’s foot is one of the most common fungal skin infections in Canada. It causes itching, peeling, and discomfort on the feet — and it spreads easily in shared spaces like gym change rooms and public showers. Understanding what causes it, what it looks like, and how to treat it can help you protect yourself and your family.
What Is Athlete’s Foot?
Athlete’s foot — known medically as tinea pedis — is a fungal infection of the skin on your feet. It gets its common name because it spreads easily in warm, moist places like locker rooms and pool change rooms, where athletes often walk barefoot.
However, you don’t have to play sports to get it. Anyone can pick up this infection. In fact, athlete’s foot is very common among everyday Canadians of all ages.
There are three main types of athlete’s foot. Each one affects a different part of the foot and looks slightly different. Knowing which type you have can help you choose the right treatment.
What Causes Athlete’s Foot?
Athlete’s foot is caused by a group of fungi called dermatophytes. These are tiny organisms that feed on keratin — the protein found in your skin, hair, and nails. The two most common culprits are Trichophyton rubrum and Trichophyton mentagrophytes.
These fungi thrive in warm, damp environments. The spaces between your toes are the perfect breeding ground. Closed-toe shoes and sweaty socks make conditions even better for fungal growth.
You can pick up the fungus by touching an infected person’s skin directly. However, most people catch it indirectly — by walking barefoot on contaminated floors in public showers, swimming pools, or change rooms.
Interestingly, not everyone who comes into contact with the fungus develops an infection. Some people are simply more susceptible than others. Susceptibility also tends to increase with age. Furthermore, if you’ve had athlete’s foot before, you’re more likely to get it again. Healthline explains more about who is at higher risk for athlete’s foot.
Even if you never develop symptoms yourself, you can still carry the fungus on your skin and spread it to others. This is one reason why athlete’s foot spreads so easily in shared spaces.
The Three Types of Athlete’s Foot
Athlete’s foot doesn’t always look the same. There are three distinct types, and each one behaves differently. Some respond well to treatment, while others can be stubborn and long-lasting.
Interdigital (Between the Toes)
This is the most common form of athlete’s foot. It usually starts between the last two toes on each foot. At first, the skin between your toes looks soft, damp, and whitish.
As the infection progresses, the skin begins to peel and crack. You may notice itching, a burning sensation, and an unpleasant odour. In some cases, bacteria can enter through the cracked skin and cause a secondary infection, making the smell and discomfort worse.
If left untreated, the interdigital type can sometimes develop into the vesicular (blister) form. However, this type generally responds well to over-the-counter antifungal treatments.
Moccasin-Type (Chronic Dry Form)
The moccasin type is a chronic form of athlete’s foot. It starts slowly, often with mild irritation and dry, itchy skin on the sole or heel of the foot. Over time, the skin becomes thick, scaly, and cracked — especially on the heels.
In severe cases, the infection can spread to the toenails. The nails may thicken, turn brittle, and eventually separate from the nail bed — a condition called onychomycosis (nail fungus). This type can also spread to the palms of the hands, often affecting both feet but only one hand at a time.
The moccasin type is the most difficult to treat. It tends to come back without ongoing preventive care. The Mayo Clinic provides detailed guidance on treating chronic athlete’s foot.
Vesicular (Blister) Type
The vesicular type is the least common form of athlete’s foot. It appears suddenly, with fluid-filled blisters forming on the sole of the foot, the toes, or sometimes the top of the foot. The blisters can be painful and look quite inflamed.
This type tends to come and go in waves. Between flare-ups, the skin may look crusty and scaly. In addition, the infection can sometimes spread to other parts of the body, including the palms and sides of the fingers. This reaction in distant skin areas is sometimes called a dermatophyte reaction.
The good news is that the vesicular type usually responds quickly to treatment. However, it can become complicated if a bacterial infection develops in the blisters.
Symptoms of Athlete’s Foot to Watch For
Symptoms of athlete’s foot can vary quite a bit from person to person. Some people have very mild discomfort, while others experience significant pain and irritation. Here are the most common signs to look out for:
Itching or burning between the toes or on the soles of the feet
Peeling or flaking skin, especially between the toes or on the heels
Redness or inflammation of the affected skin
Softened, white, or soggy-looking skin between the toes
Cracks or fissures in the skin, particularly around the heels
Fluid-filled blisters on the soles or toes
Thickened, discoloured, or crumbling toenails
Unpleasant foot odour that is worse than usual
It’s worth noting that athlete’s foot can sometimes be confused with pitted keratolysis — a bacterial skin condition that causes small pits in the skin of the soles, along with a strong odour and excessive sweating. If you’re unsure what you’re dealing with, it’s always best to get a professional opinion.
How Athlete’s Foot Spreads
Athlete’s foot is highly contagious. The fungus spreads through direct skin contact with an infected person. However, it more commonly spreads through contact with contaminated surfaces.
Common places where you can pick up the fungus include:
Public showers and pool change rooms
Gym locker room floors
Shared towels, socks, or shoes
Hotel bathroom floors
Community centre changing areas
The fungus can survive on surfaces for a long time, especially in warm and humid conditions. Therefore, wearing flip-flops or water shoes in shared wet areas is one of the best ways to protect yourself. Health Canada recommends basic hygiene practices to prevent common skin infections.
At home, you can spread the fungus to other family members through shared bath mats, floors, or towels. As a result, keeping your feet clean and dry — and not sharing personal items — helps protect the people around you.
Possible Complications
When athlete’s foot goes untreated, it can lead to more serious problems. The cracks and blisters in the skin create openings for bacteria to enter. This can result in a secondary bacterial infection.
In some cases, the bacterial infection can spread up the foot and lower leg, causing a condition called cellulitis. Cellulitis is a deep skin infection that causes redness, warmth, swelling, and pain. It usually requires antibiotic treatment and can sometimes need hospital care through your provincial health system.
Furthermore, if the infection spreads to the toenails, onychomycosis (nail fungus) can develop. Nail fungal infections are notoriously difficult to treat and often require prescription medication over several months.
People with diabetes or weakened immune systems face a higher risk of serious complications from untreated athlete’s foot. If you fall into either category, it’s especially important to seek care early.
When to See a Doctor
Many mild cases of athlete’s foot can be treated at home with over-the-counter antifungal creams, sprays, or powders available at any Canadian pharmacy. However, there are times when you should see a healthcare provider.
Visit your family doctor or a walk-in clinic if:
Your symptoms don’t improve after two to four weeks of over-the-counter treatment
The infection spreads beyond your feet or toenails
You notice increased redness, warmth, swelling, or streaking on your foot or leg
You develop a fever alongside your foot symptoms
You have diabetes, a circulation problem, or a weakened immune system
The blisters are large, painful, or appear infected
Your doctor can confirm the diagnosis and may prescribe a stronger prescription antifungal medication if needed. In Canada, most provincial health plans cover visits to your family doctor for conditions like this. Walk-in clinics are also a convenient option if your regular doctor isn’t available. As always, please consult your doctor or pharmacist before starting any new treatment.
Frequently Asked Questions About Athlete’s Foot
Is athlete’s foot contagious to other people in my home?
Yes, athlete’s foot is highly contagious. The fungus can spread through shared towels, bath mats, socks, and contaminated floors. To protect your family, keep your feet covered at home during treatment and avoid sharing personal items.
Can athlete’s foot go away on its own without treatment?
Athlete’s foot rarely clears up on its own. Without treatment, the infection usually gets worse and can spread to the toenails or other areas of the body. Over-the-counter antifungal treatments are effective for most mild cases.
How long does it take to treat athlete’s foot?
Most cases of athlete’s foot improve within two to four weeks with consistent use of antifungal cream or spray. However, the chronic moccasin type can take several months to resolve, especially if the toenails are also infected.
What is the best way to prevent athlete’s foot?
The best way to prevent athlete’s foot is to keep your feet clean and dry, change your socks daily, and wear flip-flops in public showers or change rooms. Choosing breathable footwear also reduces the warm, moist conditions that fungi need to grow.
Can athlete’s foot spread to my hands or nails?
Yes, athlete’s foot can spread to the toenails, causing a condition called onychomycosis. In some cases, particularly with the moccasin type, the infection can also spread to the palms of the hands. See your doctor if the infection spreads beyond your feet.
Is athlete’s foot more common in certain people?
Athlete’s foot tends to be more common in people who sweat heavily, wear closed-toe shoes for long periods, or frequently use shared facilities like gyms and pools. Risk also increases with age. People with diabetes or weakened immune systems are more likely to develop serious complications.
Key Takeaways
Athlete’s foot is a common, contagious fungal infection of the skin on the feet.
It is caused by fungi that thrive in warm, moist environments like gym change rooms and public showers.
There are three types: interdigital (between the toes), moccasin (chronic dry form), and vesicular (blister form).
Common symptoms include itching, burning, peeling skin, cracks, blisters, and foot odour.
Most mild cases respond well to over-the-counter antifungal treatments from your local pharmacy.
See your family doctor or a walk-in clinic if symptoms don’t improve, spread, or if you have diabetes or a weakened immune system.
Prevention is simple: keep feet dry, wear breathable footwear, and use flip-flops in shared wet areas.
Always speak with your doctor or pharmacist to find the right treatment for your situation.
