Some possible disorders of the gastrointestinal system that can cause these symptoms include:
1. Peptic ulcer disease: Ulcers in the stomach or small intestine can cause abdominal pain, vomiting, and sometimes bleeding.
2. Pancreatitis: Inflammation of the pancreas can cause severe abdominal pain, nausea, vomiting, and diarrhea.
3. Constipation: Difficulty passing stool can lead to abdominal pain and discomfort.
4. Diarrhea: Excessive bowel movements can cause abdominal pain, cramping, and dehydration.
5. Irritable bowel syndrome (IBS): A chronic disorder that can cause abdominal pain, bloating, constipation, and diarrhea.
6. Gastroenteritis: Inflammation of the stomach and intestines, often caused by a viral or bacterial infection, can lead to symptoms such as abdominal pain, vomiting, diarrhea, and dehydration.
It is important to consult a healthcare provider for a proper diagnosis and treatment if you are experiencing any of these symptoms.