Some people with severe diarrhea are prone to excessive loss of water and electrolytes, leading to electrolyte disorders and dehydration. With regular and timely treatment, the diarrhea will generally be gradually relieved in about 3-5 days. However, if the condition is severe, the duration of diarrhea may be prolonged. It is recommended to visit the gastroenterology department of a hospital for timely replenishment of water and electrolytes to avoid acidosis and other conditions. You should pay attention to a light and easy-to-digest diet, mainly liquid and soft food, avoid spicy and stimulating greasy food, quit smoking and drinking, and get more rest.