There are plenty of synonyms available for the phrase "patient has diarrhea". Some of the common synonyms include loose bowel movements, watery stool, stomach upset, intestinal cramps, uncontrolled bowel movements, and runny stools. These synonyms are commonly used in medical terminology and are useful in describing the symptoms of diarrhea. Furthermore, other synonyms that might be useful to consider include diarrhea symptoms, infection in the gut, stomach disturbances, and digestive problems, among others. When communicating with healthcare professionals, it's important to use the appropriate terminology to ensure the proper diagnosis and treatment of patients with diarrhea.