How to avoid a toenail infection

Toe fungus – medically known as onychomycosis – thrives in warm, damp environments, which is why prevention is mostly about keeping feet dry and avoiding contact with contaminated surfaces.

Public showers, gym changing rooms and swimming-pool edges are prime breeding grounds, which is why experts advise wearing flip-flops or shower shoes rather than going barefoot.

They also suggest that people should dry their feet thoroughly after washing, paying particular attention to the spaces between toes, where moisture lingers and fungus takes hold.

They should also choose breathable footwear, ideally leather or mesh, and rotate their shoes so that each pair has at least a day to dry out fully between wears.

Research also shows that it is crucial to keep toenails trimmed straight across and not too short, as damaged skin around the nail gives fungus an easy entry point.

Experts advise that people should not share nail clippers, files or socks with others, and check their feet regularly for early signs: discolouration, thickening or a crumbly nail edge. Anyone prone to sweaty feet should consider using antifungal foot powder or spray, which can help keep things dry.

Studies show that catching infections early makes them far easier to treat, so seeing a pharmacist or GP at the first sign of nail changes can make a big difference.