### Patient: Doctor, I have been noticing some symptoms in my infant, including vomiting blood and coughing. Could you tell me what might be the problem?
### Doctor: Based on the symptoms you have described, your infant may have pyloric stenosis, which is a condition where the muscle at the bottom of the stomach is too thick, making it difficult for the food to pass into the small intestine. This can lead to projectile vomiting, weight loss, and dehydration. If left untreated, it can cause bleeding in the stomach and other complications.