Symptoms of diarrhoea
The accumulation of gas and water in the digestive tract irritates the membrane of the small intestine, causing contractions in the digestive tract. These continuous contractions result in diarrhoea by evacuating the contents of the digestive tract. Diarrhoea is one of the most problematic symptoms of lactose intolerance because it causes severe dehydration, fatigue, and lethargy.
Diarrhoea is characterised by increased stool frequency, fluidity, and volume, and this symptom is more prevalent in infants than in adults.
