Impetigo in Wrestling and Grappling: What It Is

Impetigo is common, very contagious, and a regular visitor to wrestling rooms and grappling gyms — I've watched it move through a class more than once. The reassuring part is that it's usually recognisable and very treatable once a clinician is involved; the catch is that it spreads fast, so it's one to act on quickly rather than wait out. Here's the plain-English version. It's general information, not medical advice, and not about any product we sell, and it's fact-checked against trusted sources and the doctors we work with.

What impetigo is

Impetigo is a contagious bacterial skin infection. It's most common in young children — which is why you'll hear it called "school sores" — but adults absolutely get it too, and a busy contact-sport gym is a perfect setting. The NHS describes how it often starts as red sores or blisters that quickly burst and leave golden-brown, crusty patches on the skin (NHS: Impetigo). It's caused by the same broad family of bacteria behind ordinary staph infections.

Why it spreads so easily in contact sports

Impetigo passes through direct skin-to-skin contact and through contaminated items — towels, mats, shared kit. That's an almost exact description of a grappling session. It's also more likely to take hold where the skin is already broken, so mat burns, grazes and existing patches of irritated skin give it an easy way in. One untreated case in a room full of people rolling together is how a single sore quietly becomes several.

How to recognise it

The classic sign is that golden-yellow, honey-coloured crust sitting over a sore or a patch of broken skin. It often appears around the nose and mouth but can turn up anywhere the skin has been broken — including the spots grapplers tend to get knocked about. It can be itchy, and scratching tends to carry it to new areas. As ever, lookalikes exist, and confirming it is a clinician's job rather than a training partner's best guess.

What to do if you think you have it

Two priorities, in this order:

1. Get it assessed. A pharmacist or GP can confirm it and advise on management. Impetigo usually needs proper treatment to clear and to stop it spreading, rather than hygiene alone.
2. Stay off the mats until you're cleared. Because it's so contagious, training with active impetigo risks handing it straight to your partners. There's more on the etiquette in when to stay off the mats, and on how competition organisers handle visible skin issues in pre-competition skin checks.

Tell your coach early. Covering the area, not sharing towels and washing your hands well all help in the meantime, but they're a stop-gap, not a substitute for getting it looked at.

Reducing the risk

• Wash and change promptly after training.
• Keep cuts, grazes and mat burns clean and covered.
• Don't share towels or personal kit, and wash your hands well.
• Speak up early if you spot a suspicious crusted sore — on yourself or in the room.

Clubs would much rather manage one case than a roomful, and a quick word with a coach is part of basic gym courtesy.

A note for parents

Impetigo is especially common in children, so parents of young grapplers are worth keeping in the loop on what to watch for and when to keep a child off the mats. There's general, practical guidance in a parent's guide to kids' BJJ hygiene. As with adults, the safe default is: if in doubt, get it checked before training.

Common questions

How long is impetigo contagious for?

Impetigo stays catching until it's properly clearing — which is why getting it assessed and managed matters, and why training through it is a bad idea. A pharmacist or GP can advise on when it's reasonable to be back around other people. Until then, cover it where you can, keep your hands washed, and don't share towels or kit.

Can adults get it, or is it just a kids' thing?

Adults absolutely get it. It's most common in young children, which is where "school sores" comes from, but a warm, sweaty, high-contact gym is a perfectly good setting for it at any age. Don't dismiss a golden-crusted sore just because you're not five.

What's the difference between impetigo and a cold sore?

They're different things — impetigo is a bacterial infection, while cold sores are caused by a virus (the same one behind herpes gladiatorum). They can both crust over, which is one more reason not to diagnose by eye and to let a clinician confirm what you're dealing with.

When to see a doctor

See a pharmacist or GP promptly if you notice crusted, weeping or spreading sores, if a sore isn't improving, or if you're simply not sure what it is. Seek further advice if it's widespread, keeps coming back, or you also feel unwell. Impetigo is one of the clearer "act quickly" cases, purely because of how readily it travels from person to person.

This article is general educational information and not medical advice, and it isn't about any Combat Sports Hygiene product. If you're worried about your skin, contact a GP, pharmacist or dermatologist.