Which condition involves disturbances in digestion?

Dyspepsia refers specifically to a collection of symptoms that can include discomfort or pain in the upper abdomen, bloating, and nausea, all of which are related to digestion. When the digestive process is disrupted or not functioning optimally, these symptoms arise, signaling that there may be underlying issues with the digestion of food, gastric emptying, or the function of digestive enzymes.

In contrast, constipation pertains more to the regularity and ease of bowel movements, which, while related to the digestive system, does not encompass the broader array of symptoms associated with food digestion itself. Hypertension is primarily a cardiovascular condition, and gastroenteritis, although involving the gastrointestinal tract, typically refers to inflammation and infection leading to diarrhea and vomiting rather than disturbances in the digestive process itself. Thus, dyspepsia is the most fitting choice related to disturbances in digestion.