The commonest cause of vomiting in a one month old infant is
Aerophagia (var. aerophagy) is a condition of excessive air swallowing, which goes to the stomach. Aerophagia may also refer to an unusual condition where the primary symptom is excessive flatus, belching is not present, and the actual mechanism by which air enters the gut is obscure.Aerophagia in psychiatry is sometimes attributed to nervousness or anxiety. Reference: GHAI Essential pediatrics, 8th edition
Pyloric stenosis
Cardiac chalasia
Aerophagy
Gastro-esophageal reflux
Gastrointestinal tract