What are the symptoms of gastrointestinal upset?

The symptoms of gastrointestinal upset typically include nausea, vomiting, and diarrhea. These symptoms arise from issues within the digestive system, which can be triggered by various factors such as infections, food intolerances, or medications.

Nausea refers to the uncomfortable sensation that often precedes vomiting, where a person feels a strong urge to vomit without necessarily expelling anything at that moment. Vomiting is the act of forcibly emptying the stomach’s contents through the mouth, which can lead to dehydration if it persists. Diarrhea involves frequent, loose, or watery bowel movements, which can likewise result in fluid loss and electrolyte imbalances if not managed properly.

In contrast, the other options describe symptoms associated with different medical conditions. Skin rashes and headaches may indicate allergic reactions or other systemic issues, but they are not typically linked to gastrointestinal disorders. Joint pain and fatigue are more relevant to conditions like arthritis or systemic illnesses. Lastly, swelling of nasal membranes is generally associated with respiratory issues, such as allergies or colds. Therefore, option B accurately captures the symptoms associated with gastrointestinal upset.