Athlete's foot is one of the most common skin complaints seen in UK pharmacies, and for most people it's a minor, manageable nuisance rather than anything serious. It tends to flare up in warm weather, after time at the gym or swimming pool, or simply from feet staying damp inside shoes for too long during the day.
This guide covers what causes athlete's foot, how to recognise it, the antifungal creams that actually work and how long to use them, when tablets are needed instead, and the everyday habits that stop it coming straight back once it's cleared.
What athlete's foot is and why it happens
Athlete's foot, known medically as tinea pedis, is a fungal skin infection caused by dermatophyte fungi that feed on keratin, the protein found in skin, hair and nails. These fungi thrive in warm, moist, poorly ventilated conditions, which is exactly the environment created inside trainers, socks and boots worn for long periods.
It's often picked up from walking barefoot on damp, contaminated surfaces such as swimming pool sides, gym changing rooms and communal showers, where the fungus can survive on flooring and be transferred easily between people. It isn't limited to athletes; anyone whose feet spend a lot of time warm and enclosed, or who shares floors and mats with others, is at risk.
Once picked up, the fungus tends to settle in the moist skin between the toes before potentially spreading to the sole, sides and top of the foot if it isn't treated. People with sweaty feet, poor foot ventilation, a weakened immune system, or diabetes are more prone to developing it and to it lingering or recurring.
Recognising the symptoms
Athlete's foot most commonly starts as itching, along with cracked, flaking or peeling skin between the toes, especially between the fourth and fifth toes where they sit close together. The skin can look red and inflamed, feel sore, and sometimes develop small blisters, particularly on the sole or side of the foot.
As it progresses, the dryness and scaling can spread across the sole in a pattern sometimes described as a "moccasin" distribution, and the skin may become thickened. A less common form causes fluid-filled blisters on the sole or instep, which can be itchy and uncomfortable, especially in warm weather.
A pharmacist can usually recognise athlete's foot from how it looks and where it is, without needing tests. It's worth mentioning any history of eczema, psoriasis or diabetes, since these can change how it presents or how quickly it should be treated.
Treating athlete's foot: antifungal creams and how long to use them
For most people, a topical antifungal cream applied directly to the skin is all that's needed. Terbinafine 1% cream, clotrimazole 1% cream and miconazole 2% cream are the standard options available from pharmacies, and NHS guidance treats all three as effective choices for clearing the infection.
Some evidence suggests terbinafine works a little faster than azole creams like clotrimazole, often clearing symptoms within one to two weeks compared with two to four weeks for an azole. Even so, the single most important factor for success with any of these creams is finishing the full course exactly as directed, typically continuing for one to two weeks after the visible rash has gone, since the fungus can still be present in the skin even once it looks clear.
Wash and dry the feet thoroughly, particularly between the toes, before each application, and apply the cream to the whole area affected plus a small margin of surrounding skin, not just the most obviously flaky patch. For children, a pharmacist can advise on a suitable product and technique.
When tablets are needed instead of cream
Most cases of athlete's foot respond well to a topical cream, but oral antifungal tablets, such as terbinafine taken by mouth, may be considered for infections that are widespread, have spread to the toenails, or haven't responded to correctly used topical treatment. Tablets work throughout the body rather than just at the site applied, which can help with more stubborn or extensive infections.
Because oral antifungals need to be matched to the person taking them, including checking for interactions with other medicines and any relevant health conditions, this route requires an assessment by a GP or clinician rather than being bought over the counter. Your clinician will explain the expected course length and what to expect as the infection clears.
Stopping it coming back: footwear, hygiene and shared spaces
Athlete's foot has a well-earned reputation for coming back, usually because the conditions that caused it in the first place haven't changed. Drying feet completely after washing, swimming or exercise, especially between the toes, removes the damp environment the fungus needs to thrive.
Wearing breathable footwear, changing socks daily (or more often if feet sweat heavily), and alternating between at least two pairs of shoes so each pair has time to dry out fully between wears all make a real difference. Antifungal or talc-based foot powders can help keep feet dry inside shoes during the day.
In shared spaces such as swimming pools, gyms and communal showers, wearing flip-flops or shower shoes rather than going barefoot reduces the chance of picking up or passing on the fungus. At home, avoid sharing towels, socks or shoes with someone who has an active infection, and wash bath mats and towels regularly at a hot temperature while symptoms are present.
When to see a doctor or podiatrist
Most athlete's foot clears well with the topical treatment described above, but it's worth seeking further advice if the infection is widespread across the foot, has spread to the toenails causing thickening or discolouration, or shows signs of a secondary bacterial infection such as increasing redness, swelling, warmth or discharge.
You should also seek assessment if a correctly used cream hasn't improved things after the full recommended course, if the infection keeps returning despite good foot hygiene, or if you have diabetes or a weakened immune system, since fungal skin infections can behave differently and need closer monitoring in these situations. A pharmacist is a good first port of call and can advise when a GP or podiatrist review is the right next step.