At an appointment with a patient with diarrhea: the doctor’s algorithm of actions

Diarrhoea is one of the most common gastroenterological complaints made by patients who seek medical attention. It can be a manifestation of the whole range of different diseases, although not exclusively of the digestive tract, which requires a thorough examination of the patient and often is a challenge for the clinician, especially in the limited time settings during an outpatient visit. The cause of diarrhoea should be identified early to begin treatment of the patient in a timely and rational manner. In managing a patient with diarrhoea, a diagnostic search must begin with the following actions: working out complaints in detail, identification of symptoms of anxiety and taking a medical history, including epidemiological, pharmaceutical, hereditary, allergic, as well as analysis of dietary preferences. A physical examination is an integral part of the patient management; it allows to assess the general health condition, identify signs of dehydration and clinical stigmas of the underlying condition, which may manifest itself as diarrhoea. After an initial examination and exclusion of anxiety symptoms, a number of laboratory and instrumental examination methods is prescribed to determine the cause of diarrhoea. Given the polyetiology of diarrhoea syndrome, the range of methods for examining the patient can be quite wide, therefore the choice of area for the diagnostic search and the scope of the necessary diagnostic procedures is carried out on an individual basis, taking into account the features of the clinical picture, history data and physical examination findings. Treatment of a patient with diarrhoea at the pre-examination stage must include rehydration, timely detection and correction of electrolyte disturbances and other possible complications. Once the cause of diarrhoea has been established, the patient is treated due to the identified etiological factor in accordance with the current clinical guidelines. The article presents a step-by-step algorithm for making a differential diagnosis in a patient with diarrhoea, and also presents our own clinical observations.