It can be3Types:
1There is a feeling of discomfort in the upper abdomen, with periodic vomiting since infancy, that is, intermittent pyloric dysfunction is present from infancy and childhood until adulthood, but some primary cases have no history of repeated vomiting in infancy.
2Upper abdominal discomfort and dyspepsia symptoms begin in adulthood, with increased pain and vomiting after eating as common symptoms.
3Pyloric obstruction symptoms appear only from middle age to old age, with a short history of ulceration, but progressive, with possible bleeding. After detailed examination, the final surgery only found hypertrophy of the pyloric muscle.
The clinical symptoms and the degree of pyloric stenosis are related to the duration of the disease, and there may be no symptoms at all. Symptoms usually appear in adulthood, manifested as postprandial upper abdominal fullness and discomfort or postprandial vomiting. The discomfort in the upper abdomen after vomiting is relieved, showing intermittent attacks. Pyloric pre-ulceration often occurs with the above symptoms, and physical signs are rare, and the thickened pyloric canal is rarely palpated, and in severe cases, there may be signs of pyloric obstruction.