The following are the most important diseases or complications that may be contributed to by achalasia:
Respiratory system (J00-J99)
- Aspiration pneumonia (pneumonia caused by inhalation of foreign material (often stomach contents)).
Mouth, esophagus (food pipe), stomach, and intestines (K00-K67; K90-K93).
- Retentive esophagitis (esophageal inflammation associated with bacterial colonization of food pulp in diverticula/mucosal outpouchings); represents a risk factor for esophageal cancer (cancer of the esophagus)
Neoplasms (C00-D48)
- Squamous cell carcinoma of the esophagus (esophagus).
Symptoms and abnormal clinical and laboratory findings not elsewhere classified (R00-R99)
- Weight loss
