Final answer:
Moderate to severe colic can be indicative of conditions like gastric ulcers, enterolithiasis, and intestinal obstruction, each causing significant pain and digestive symptoms.
Step-by-step explanation:
Conditions that present with signs of moderate to severe colic can be complex and involve various parts of the gastrointestinal tract. Three such conditions include gastric ulcers, which are sores in the stomach lining causing pain and possibly bleeding; enterolithiasis, which involves the formation of stones within the intestine that can cause blockage; and intestinal obstruction, a serious condition where the intestinal passage is blocked, restricting or stopping the flow of content through the bowels.
Each of these conditions can lead to symptoms such as severe abdominal pain (colic), nausea, vomiting, and alterations in bowel movements. Gastric ulcers may lead to dark stools due to bleeding, while in cases of intestinal obstruction and enterolithiasis, there might be an absence of stools due to the blockage in the intestines.