An eczema rug (also called a sweet itch rug) protects your horse or pony from the bites of midges and mosquitoes. In this blog you will learn when to put it on, what to look out for when choosing, how to determine the right eczema rug size and how to prevent rub marks and overheating.

What is an eczema rug and when do you need it?

An eczema rug is a close-woven, fine-mesh rug with extra coverage (think a neck cover and/or belly flap) that covers as much skin as possible. The rug does not cure sweet itch, but it does limit the number of bites, so your horse has less reason to rub. You typically see them on horses with clear sweet itch symptoms (itching, rubbing, damaged mane or tail) and on horses that become sensitive every spring and where preventive use makes sense.

Cause, symptoms and triggers

Sweet itch is a hypersensitivity reaction to the saliva of biting insects, primarily midges. The itching this causes drives a horse to rub, resulting in skin damage. When symptoms flare up exactly varies from horse to horse, but the insect season and dusk are common trigger times.

Recognise the spots: mane crest, tail base and belly line

The most common rubbing spots are:

• Mane crest and neck: broken mane, thickened skin, dandruff.
• Tail base: bare rubbing, sores, scabs.
• Belly line: itching along the belly seam, sometimes up to the chest.

When to call your vet?

Call your vet for open wounds, severe swelling, signs of infection, fever, or if you are unsure whether it is really sweet itch. If your horse keeps rubbing while the rug is on and management is in order, ask for an extra check-up too. When in doubt, always get in touch.

When do you put an eczema rug on (and take it off)?

Starting preventively: why early in the season works

With sweet itch, prevention is often much easier than recovery after the fact. Many owners start early in spring, as soon as the first insects appear. If you wait until the itching has already begun, the skin is already sensitive and rubbing can quickly become a habit. A frequently asked question is: when exactly should the rug go on? The answer: around the time your horse had problems in previous years. For most horses that is already in spring when the insects become active.

Warm weather: preventing overheating

An eczema rug covers a large part of the body, so overheating is a risk, especially in still and humid weather. Yes, a horse can overheat with a rug on, and it is a risk you must take seriously. Here is how to limit that risk:

• Choose a breathable material and a style that fits well without being too tight.
• Provide shade, sufficient water and adjust turnout times if that suits your horse (e.g. stabled during the day, out in the evening).
• Check the skin under the rug daily for hot spots or early rub marks.

The rug comes off when the insect season is truly over and your horse shows no more itching. Ease this transition gradually and stay alert on mild autumn days.

What to look for when choosing an eczema rug?

Not every eczema rug fits the same way, and you notice this immediately in comfort or, conversely, in rub marks. The following points will quickly guide you to a style that works well.

Fit & preventing rub marks (shoulder/chest/withers)

Fit is the most important factor. Look for:

• Shoulder freedom: the rug must not constrict the shoulder during movement or when grazing.
• Chest fastening: secure but not tight; check for friction.
• Withers: sufficient space or soft padding; prevent pressure on the withers.

Practical tip: check extra carefully after the first 24–48 hours. A small red spot or an early rub mark can still be resolved easily by adjusting something or switching styles.

Neck cover, belly flap, tail flap: what do you need?

Which parts are most important depends on where your horse rubs:

• Neck: important if your horse mainly rubs at the mane crest or neck.
• Belly flap: helps with itching along the belly seam and reduces bites under the belly.
• Tail flap: protects the tail base; make sure it does not ride up.

Many sweet itch horses benefit from both a neck cover and a belly flap. If you are unsure what your horse needs, opt for the most complete coverage.

Material (breathable/fine-mesh/UV)

Opt for a fine-mesh, breathable material that keeps insects away and remains comfortable on warm days. Some rugs also offer UV protection, which is handy if your horse spends a lot of time in the sun.

Fastenings & adjustability

Adjustable chest, belly and neck fastenings allow the rug to fit your horse precisely. Also look for:

• Robust fastenings that can handle daily use;
• Elastic inserts where needed for freedom of movement;
• Sufficient length on the belly flap for your horse type.

What size eczema rug does my horse need?

The right eczema rug size prevents slipping, pressure points and open sores. A tape measure is easiest. Make sure your horse is standing on level ground and measure from the centre of the chest along the side to the furthest point of the hindquarters. Then compare the result with the size chart of the brand you have in mind, as sizes can vary slightly between manufacturers.

Between two sizes?

Undecided between two sizes? Here are the rules of thumb:

• Is your horse broad in the chest or shoulder? Choose the larger size for freedom of movement.
• Is your horse narrow or do rugs slip backwards quickly? Then the smaller size may fit better.

When in doubt, always check reviews on fit or contact customer service.

Use & care

Washing, drying and detergent

Wash the rug only when necessary, but do not let sweat and dirt sit too long either: they chafe faster than you think. Use a mild rug wash, fasten velcro and buckles and follow the care label. Ideally, let the rug air dry in a not-too-warm place, so the material and elastic last longer.

Repair & lifespan

A small tear in fine-mesh material quickly gets larger. So address it promptly with a repair kit, stitching or a rug repair service. Many owners find it useful to have two rugs: one on the horse and one to wash or have repaired.

Common mistakes

• Starting too late: start preventively as soon as insects appear, not only once the itching is already visible.
• Wrong fit: do a fit check at the shoulder, chest and withers and repeat it after 1–2 days.
• Overlooking overheating: choose breathable material, offer shade and adjust turnout times.
• Not checking daily: check skin, fastenings and rub marks every day.

Eczema Rug vs Fly Rug

An eczema rug and a fly rug look similar at first glance, but they are not the same. A fly rug is designed to keep flies and insects away and is often woven a little more loosely with lighter material. An eczema rug goes a step further: the material is finer-meshed and more tightly woven, so even small biting insects such as midges cannot get through. In addition, an eczema rug generally offers more coverage with a neck cover and belly flap. Exactly the spots where a sweet itch horse suffers most. A fly rug is therefore suitable for horses troubled by flies, but for a horse with sweet itch a specific eczema rug is the better choice.

A good eczema rug is only truly good when it fits perfectly!

An eczema rug is one of the most effective ways to help a sweet itch horse through the season. But only if you put it on in time, the fit is right and you check briefly every day. When choosing, pay attention to shoulder freedom, sufficient coverage (neck and belly) and breathable, fine-mesh material. Combine the rug with smart stable and pasture management and you give your horse the best possible protection.