Dealing with Ringworm

Ringworm in Horses: A Guide for Horse Owners

Your horse is usually sleek and healthy, and then patches of hair start to fall out and the skin looks crusty. It is worrying, and it may well be ringworm. Despite the “worm” in its name, no worm causes it at all. It is a very common skin problem in horses, and knowing what it is, how to spot it, and how to deal with it can save your horse a lot of discomfort and keep your barn a happy, healthy place. This guide covers what you need to know about ringworm in horses, from recognizing the signs to keeping it away.

What Exactly Is Ringworm? (Hint: It’s Not a Worm!)

Ringworm is caused by tiny living things called fungi. Picture mushrooms, only much, much smaller, so small you can’t see them without a powerful microscope. These fungi love to live on the skin, hair, and even nails of animals (and people). When they grow on a horse, they make the hair fall out in round patches, which is where the “ring” part of the name comes from. The medical term is dermatophytosis, which just means a skin infection caused by fungi.

Several different fungi can cause ringworm in horses, but they all generally cause similar signs. It is a bit like different weeds causing similar problems in a garden: they are all unwanted and all need dealing with.

How Do Horses Catch Ringworm?

Ringworm is highly contagious, which is why it can spread quickly through a barn. Here’s how horses usually get it:

Direct Contact: This is the most common way. When an infected horse rubs against a healthy horse, the tiny fungal spores (like seeds for the fungus) can jump from one to the other. Think of two friends hugging: if one of them had glitter on, some of it would probably end up on the other.
Shared Equipment: Brushes, saddles, blankets, halters, and even lead ropes can carry fungal spores. If you use a brush on an infected horse and then on a healthy horse without cleaning it, you are essentially spreading the problem. That is why it’s so important to have separate equipment for each horse, or to clean it very, very well. You can find many useful products for maintaining your horse’s overall health and hygiene, including grooming tools and washes, in the All Products section on Piaffe.horse.
The Environment: Fungal spores are tough. They can live for a long time in the environment, such as in stall bedding, on stable walls, or in fences. Even after an infected horse leaves, the spores might still be waiting for a new horse to come along. These fungi usually like warm, damp places the most.
Weak Immune System: You catch a cold more easily when you’re tired or stressed, and horses with a weak immune system might be more likely to get ringworm. Young horses, older horses, or horses that are already sick are sometimes more susceptible.

Spotting the Signs: What Does Ringworm Look Like?

Ringworm usually has some pretty clear signs, which makes it easier to spot, and catching it early can help stop it from spreading. Keep an eye out for these clues:

Hair Loss

Hair loss is often the first thing you’ll notice. Patches of hair start to fall out and leave bare spots. These spots often look round or oval, and they tend to get bigger over time. The hair might break off right at the skin level.

Crusty or Scaly Skin

The skin under the lost hair might look flaky, scaly, or crusty. It can look a bit like dandruff, but usually thicker and sometimes greyish or yellowish. There might be small scabs too.

Itchiness (Sometimes)

Not every horse with ringworm gets very itchy, but some rub, scratch, or even bite at the affected areas because it bothers them. If your horse is suddenly rubbing its mane or tail more than usual, check other areas too. For general skin and coat health, especially if your horse is prone to itching or skin issues, Coat & Body Care products can be beneficial.

The “Ring” Shape

As the name suggests, the lesions (the affected spots) often start as small bumps and then grow outwards, leaving a ring-like pattern with healing in the center. Not all ringworm looks like a perfect ring, though, especially when many spots merge together.

Common Places to Find It

Ringworm loves areas where tack rubs or where horses sweat. You’ll often find it on the horse’s face, neck, shoulders, chest, and around the saddle or girth area, but it can pop up anywhere on the body.

How Does a Vet Diagnose Ringworm?

If you suspect ringworm, call your veterinarian, because a vet can confirm what’s going on. Here’s how they usually figure it out:

Looking at the Skin: A vet can often make a pretty good guess just from the specific way the hair loss and skin look. Experience helps them recognize the typical ringworm pattern.
Skin Scrapings or Hair Plucks: The vet might take a tiny sample of skin or pluck a few hairs from the edge of an affected area. They then examine the sample under a microscope to look for fungal spores.
Fungal Culture: This is the most reliable way to confirm ringworm. The vet sends a sample of hair or skin to a special lab, and the lab tries to grow the fungus from it on a special dish. If fungus grows, it’s ringworm. Results can take a few days or even weeks, so patience is key.
Wood’s Lamp: Sometimes a vet shines a special UV light (called a Wood’s Lamp) on the affected areas, because some types of fungi glow under it. Not all ringworm fungi glow, though, so a lack of glow doesn’t mean your horse definitely doesn’t have ringworm. It is just one tool they might use.

Treatment: Helping Your Horse Get Better

Treatment helps your horse heal and stops the infection from spreading, so start it once ringworm is diagnosed. Always follow your vet’s advice for the best results.

1. Isolation and Cleaning

The very first step is to isolate your infected horse if possible, which means keeping them separate from other horses to prevent the fungus from spreading. Clean their stall thoroughly and keep their equipment (brushes, blankets, and so on) separate from other horses’ gear.

2. Topical Treatments

Most ringworm infections are treated with washes, shampoos, or creams applied directly to the affected areas. These contain special ingredients that kill the fungi. Your vet will recommend the best product and how often to use it.

Anti-Fungal Shampoos: These often wash the entire horse, or at least the affected areas, several times a week, and they help kill the fungus on the skin and hair. After a prescribed anti-fungal shampoo, you might follow up with a gentle, soothing shampoo like Piaffe Reluminate Shampoo or Piaffe Revive Shampoo to maintain skin and coat health, especially as the skin recovers. For specific areas, especially the mane and tail, which are often affected, a targeted wash such as Piaffe Reluxe Maintail Shampoo can be very helpful.
Creams and Ointments: For smaller, more localized patches, your vet might prescribe a cream or ointment to apply directly. Products like Piaffe Repair Cream can be beneficial for soothing and healing the skin after initial treatment, helping to restore the skin barrier. For general conditioning and protection of the mane and tail as hair grows back, consider a product like Piaffe Refresh Maintail Cream.
Sprays: Sometimes a vet recommends a spray for easy application to larger areas. After these treatments, keeping the coat moisturized with a product like Piaffe Release Spray Conditioner can help prevent dryness and promote healthy hair regrowth.

Keep treating your horse for as long as your vet says, even when the spots start to look better. The fungus can still be lurking, and stopping treatment too soon can let the ringworm come back.

3. Oral Medications (for Severe Cases)

Your vet might prescribe medication that the horse takes by mouth if the ringworm is very severe, covers a large part of the body, or isn’t improving with topical treatments. These are strong medications, and vets use them only under strict veterinary guidance.

4. Environmental Cleaning

Remember those tough spores? Clean everything the infected horse has touched, including stalls, feed buckets, water troughs, fences, and especially all grooming tools and tack. Use a special disinfectant that kills fungi. Your vet can recommend suitable products for thorough cleaning of your barn and equipment. For general sanitation and specialized care, you can explore options in Specialized Care & Protection.

Prevention is Always Better: Keeping Ringworm Away

The best way to deal with ringworm is to stop it from happening in the first place. Here are some important prevention tips:

1. Good Hygiene for Horses

Regular grooming and bathing keep your horse’s skin and coat healthy, which makes it harder for fungi to take hold. Use high-quality shampoos and conditioners to maintain natural defenses. Piaffe offers a variety of products, for instance Piaffe Repel Oil Shampoo, which can help maintain a healthy coat barrier, and Piaffe Release Spray Conditioner for daily conditioning. You can browse all these options at the Piaffe Shop.

2. Quarantine New Horses

When a new horse arrives at your barn, keep them separate from your other horses for a few weeks. This is called quarantine. During this time, you can watch them closely for any signs of illness, including ringworm. If they develop symptoms, you can treat them before they spread anything to your other horses.

3. Don’t Share Equipment!

Don’t share equipment, and this one matters a lot. Each horse should have their own set of brushes, saddle pads, and blankets. If you absolutely have to share (like in a riding school), make sure everything is thoroughly cleaned and disinfected between uses. Think of sharing toothbrushes: you wouldn’t do it, right? The same principle applies to preventing the spread of skin problems.

4. Keep the Environment Clean and Dry

Fungi love damp, dirty places, so keep stalls clean and dry. Make sure there’s good air circulation. Regularly clean and disinfect common areas like cross-ties, wash stalls, and tack rooms.

5. Boost Immune System

A healthy horse with a strong immune system is better at fighting off infections. Make sure your horse gets good nutrition and plenty of exercise and isn’t overly stressed. Talk to your vet about what’s best for your horse’s overall health.

When Should You Call the Vet for Ringworm?

Call your vet whenever you suspect ringworm. Some very mild cases get better on their own or with over-the-counter treatments, but it is generally best to call your vet if:

You suspect your horse has ringworm (to get a proper diagnosis).
The lesions are spreading rapidly or getting worse.
Your horse seems very itchy or uncomfortable.
The ringworm isn’t responding to home treatments after a week or two.
You have multiple horses and want to prevent a full-blown outbreak.
You’re unsure about how to clean your environment effectively.

Ringworm in Other Animals and Humans

Ringworm is zoonotic, so it can spread from animals to humans, and even to other pets like cats and dogs. If your horse has ringworm, be extra careful when handling them:

Always wear gloves when treating your horse.
Wash your hands thoroughly with soap and water after touching your horse or any of their equipment.
Avoid touching your face while handling an infected horse.
If you develop any suspicious red, itchy patches on your skin, especially after handling your horse, tell an adult or doctor right away.

There is nothing to be scared of here. You only need to stay aware so you can take simple steps to protect yourself and your family.

Understanding Ringworm: A Quick Summary

Here is a quick review of the important things about ringworm in horses:

What It Is	How It Spreads	What It Looks Like	How to Treat	How to Prevent
It is a fungal infection (not a worm) of the skin, hair, and sometimes nails.	Horses pass it on through direct contact. Shared grooming tools, tack, and blankets spread it. Contaminated stalls or environments carry it.	Round or oval patches of hair loss appear. The skin turns crusty and scaly. Some horses itch. It often shows on the face, neck, shoulders, and girth area.	Isolate the infected horse. Apply anti-fungal washes or creams (vet prescribed). Thoroughly clean and disinfect the environment and equipment. Give oral medication for severe cases (vet prescribed).	Practice good hygiene and regular grooming. Quarantine new horses. Don’t share equipment. Keep the environment clean and dry. Ensure good nutrition and low stress.

Bottom Line: Keeping Your Horse Healthy and Happy

Ringworm might seem like a tricky problem, but with good knowledge and quick action it is usually very treatable. Remember three things: keep up good hygiene, watch your horse for unusual signs, and call your vet if you’re worried. When you keep your horse, their equipment, and their living space clean, you protect them from ringworm and from many other skin issues too. A happy, healthy horse makes for a happy owner. Check out high-quality horse care products regularly to support your horse’s well-being, on sites like Piaffe.horse, where a wide range of products for maintaining their coat, mane, and general care are available.