Loss of weight. Since the ulcer sufferer, as the condition progresses, tends to avoid food, an inevitable consequence of this is loss of weight. Also, the stomach tends to feel quite heavy, as if it is full, and this also tends to inhibit the person’s inclination to eat. Some people also experience nausea and vomiting as symptoms of the ulcer, and this can exacerbate the loss of weight. As the ulcer becomes worse, these symptoms also grow more intense.

Discoloration in the stools. Stools can vary in color, depending on what one eats. However, a long-term change in the color or texture of the stools requires attention, as it could be a symptom of a serious ailment. Those who suffer from ulcers tend to have extremely dark colored stools, with an exceedingly bad smell. This discoloration and bad odor are due to the bleeding of the ulcer. The stools look tarry, and such stools are a distinctive sign, not only of ulcers but of other possibly serious problems in the digestive tract. This symptom is strongly indicative of an ulcer and medical attention is necessary.

Vomiting blood. As a stomach ulcer grows more serious, and especially if it is left untreated, it can escalate into a perforated ulcer. This is when a peptic ulcer has become serious to the point where there is an actual hole in the lining of the stomach, as well as in the stomach wall. This leads to food and other matter, including stomach acid, entering the abdominal cavity itself. This is an extremely serious health issue and requires urgent treatment. Vomiting blood is a common symptom of this.

Intense exhaustion. As with most serious conditions in which the body is fighting off a major issue, fatigue is a common symptom of an ulcer. Anemia is common, as is dizziness. There may also be breathlessness. A person suffering from this condition could feel extreme weakness if they try to move, and a tendency to sleep all through the day. Foods rich in iron, or supplementation with iron, can ease this effect to some extent.