Esophageal Stricture in Horses: Long-Term Problems After Choke

Esophageal stricture is a narrowing of part of the esophagus, the tube that carries food from the mouth to the stomach. In horses, this problem most often develops after choke, when feed becomes stuck and the esophageal lining is injured. As that damaged tissue heals, scar tissue can form and tighten the passage.

This narrowing can make it hard for food, water, and saliva to move normally. Some horses only struggle with dry feed. Others have repeated choke episodes, cough during eating, or push feed and saliva back out through the nostrils. Because material can be inhaled into the lungs, this condition can also lead to aspiration pneumonia.

Esophageal stricture is not always obvious right after a choke episode. Signs may appear days to weeks later as the injured area scars down. That is why follow-up after a significant choke matters, especially if your horse is still swallowing abnormally or keeps choking again.

The most common cause in adult horses is healing after esophageal obstruction, also called choke. When feed stays lodged for too long, pressure and irritation can damage the esophageal lining. Severe circumferential ulceration is especially concerning because it can heal with scar tissue that tightens the tube.

Risk factors for the original choke episode can also raise the chance of later stricture. These include eating dry grain too fast, feeding dry beet pulp or hay cubes without enough soaking, poor dental health that limits proper chewing, and underlying anatomic problems of the esophagus. Some horses also have recurrent choke because of external compression or other structural disease.

Less commonly, strictures may be seen in foals or develop after trauma, severe inflammation, or esophageal injury. Your vet will look at the whole picture, because treatment depends not only on the narrowed area itself but also on why it formed in the first place.

Diagnosis starts with a careful history and exam. Your vet will want to know when the choke happened, how long it lasted, what feed was involved, and whether your horse has had coughing, fever, nasal feed discharge, or repeat episodes. That history helps separate a one-time choke from a longer-term swallowing problem.

Endoscopy is one of the most useful tests. A flexible camera can examine the esophagus for ulceration, narrowing, retained feed, and healing changes after choke. In many horses, this is the test that confirms a stricture. Your vet may also pass a nasogastric tube and note where resistance occurs.

In some cases, your vet may recommend contrast radiographs or other imaging to define the location and length of the narrowing, especially if surgery or repeated dilation is being considered. Chest evaluation may also be needed if aspiration pneumonia is a concern. Because horses with strictures can worsen quickly if they inhale feed, diagnosis often includes checking temperature, lung sounds, and overall hydration.

The best prevention is reducing the risk of choke and getting prompt care when choke happens. Feed dry beet pulp, hay cubes, and similar feeds only as directed, with adequate soaking when appropriate. Horses that bolt their feed may do better with slower-feeding strategies, smaller meals, or obstacles such as large smooth rocks in the feed tub if your vet feels that is safe for your setup.

Dental care matters too. Poor chewing leaves larger feed particles that are more likely to lodge in the esophagus. Regular oral exams with your vet can help identify sharp points, missing teeth, or other problems that make swallowing less efficient.

After any significant choke episode, follow your vet’s feeding instructions closely. Many horses need soaked feed for several days, sometimes longer, while the esophagus heals. Recheck visits are important if your horse still coughs, has nasal feed discharge, eats slowly, or chokes again. Early follow-up can catch ulceration or narrowing before it becomes a bigger long-term problem.