What are the symptoms of hiatus hernia?

Acid Reflux: Bad heartburn, fullness/pain in upper abdomen/chest (worse after eating), regurgitation of bitter fluid (especially when lying flat or bending over), sometimes difficulty breathing, frequent pneumonias, asthma attacks. Severity of symptoms depends on how large the hernia is. Most hiatal hernias are small and cause mild heartburn or no symptoms at all.

Many: Typically, large hiatal hernias are associated with difficulty swallowing, intermittent chest pain and pressure, feeling full with small amounts of food, and sometimes heartburn and regurgitation.

See below: The most common symptoms include heartburn and sometimes regurgitation. Some epigastric discomfort may be present. If the hernia enlarges or esophagitis from reflux worsens, you may feel as though food gets stuck on the way down. If the hernia continues to enlarge, these symptoms plus chest discomfort and occasional difficulty taking a deep breath, especially with exertion, may occur.