If your horse is coughing, you may wonder what’s causing the sound and if you should be worried. While occasional coughing can be normal, especially after exercise or exposure to dust or pollen, persistent or severe coughing can indicate an underlying health issue that requires veterinary attention.

In the next sections, we will list some of the common reasons why horses cough, what signs to look for, and how to help your equine companion feel better.

Respiratory Infections

One of the most common reasons why horses cough is a respiratory infection, which can be caused by bacteria, viruses, or fungi. These infections can affect the lungs, bronchi, trachea, or nasal passages and lead to inflammation, mucus production, and irritation.

Some of the signs that your horse may have a respiratory infection include:

  • Coughing more than usual, especially at rest or after exercise
  • Nasal discharge, which may be clear or colored
  • Fever, which may indicate a systemic infection
  • Reduced appetite or lethargy, which may signal a more severe infection

Respiratory infections can spread easily between horses, especially in crowded or poorly ventilated environments, and may require isolation and treatment with antibiotics, antifungals, or other medications. Your veterinarian may also recommend supportive care, such as steam inhalation, cough suppressants, or immune boosters.

Allergies

Another common cause of horse coughing is allergies, which can be triggered by various irritants in the environment, such as dust, mold, pollen, or hay. Allergic reactions in horses can manifest as respiratory symptoms, skin problems, or digestive issues, and may worsen over time if not managed properly.

Some common signs that your horse may be experiencing an allergic reaction include:

  • Coughing, especially in response to dust or exercise
  • Nasal discharge or congestion, especially in the presence of allergens
  • Skin itching or hives, which may appear after contact with certain materials or plants
  • Digestive upset, such as diarrhea or colic, which may occur after ingestion of allergenic feed or supplements

To diagnose an allergy, your veterinarian may perform skin or blood tests to identify the specific allergens that affect your horse.

Treatment options for horse allergies include:

  • Environmental management, such as reducing exposure to dust or mold by using fans, ventilation, or wetting hay
  • Medications, such as antihistamines, corticosteroids, or immunotherapy, which can help reduce the allergic response
  • Nutritional supplements, such as omega-3 fatty acids, which may have anti-inflammatory effects

Equine Asthma

Equine asthma, also known as heaves or recurrent airway obstruction, is a chronic respiratory condition that can cause coughing, wheezing, and difficulty breathing. This condition is similar to human asthma and can be triggered by allergens, irritants, or changes in temperature and humidity.

Your horse may have equine asthma if you notice signs such as:

  • Coughing, especially after exercise or exposure to dust or mold
  • Wheezing or crackling sounds in the lungs, which may be audible with a stethoscope
  • Difficulty breathing or increased respiratory rate, especially during flare-ups
  • Weight loss or muscle wasting, which may occur due to reduced exercise tolerance or appetite

Equine asthma can be managed with a combination of medications, environmental control, and nutritional support. Your veterinarian may prescribe bronchodilators, corticosteroids, or other medications to relieve the symptoms and reduce inflammation.

You may also need to make changes in your horse’s diet, bedding, or exercise routine to reduce exposure to triggers and improve lung function. In addition, maintaining good hygiene practices in the stable, providing adequate ventilation, and minimizing dust and other irritants can help prevent respiratory problems in horses.

If your horse is showing signs of respiratory distress, it’s important to seek veterinary care promptly to prevent complications and ensure the best outcome for your equine companion.

Gastric Reflux

Gastric reflux, also known as acid reflux or heartburn, can cause horses to cough or gag after eating. This condition occurs when stomach acid and food flow back into the esophagus and irritate the lining.

If your horse is experiencing gastric reflux, you may notice signs such as:

  • Coughing or gagging after eating, especially after consuming a large or rich meal
  • Drooling or regurgitating food, which may indicate difficulty swallowing or discomfort
  • Poor appetite or weight loss, which may occur due to the discomfort or inflammation in the esophagus

To diagnose gastric reflux, your veterinarian may perform an endoscopy or ultrasound to examine the esophagus and stomach.

Treatment options for gastric reflux include:

  • Feeding smaller, more frequent meals to reduce the amount of food and acid in the stomach at once
  • Administering antacids or other medications to reduce the acidity in the stomach and soothe the esophagus
  • Adjusting the diet or feeding routine to avoid triggering the reflux, such as avoiding high-grain diets or alfalfa hay

Other Causes

In addition to the above causes, horse coughing can also be caused by other factors, such as dental problems, heart disease, or tumors. These conditions may require different diagnostic and treatment approaches and should be evaluated by a veterinarian.

Conclusion

If your horse is coughing, it’s important to pay attention to the signs and seek veterinary advice if the coughing persists or worsens. By understanding the common causes of horse coughing and the available treatments, you can help your equine companion feel better and prevent complications.

Remember to follow good hygiene practices and environmental management strategies to reduce the risk of respiratory infections and allergies in your horse.