Clinical guidelines Chapter 3: Gastrointestinal disorders Acute diarrhoea Shigellosis Amoebiasis Disorders of the stomach and duodenum Gastro-oesophageal reflux Gastric and duodenal ulcers in adults Dyspepsia Stomatitis Oral and oropharyngeal candidiasis Oral herpes Other infectious causes Stomatitis from scurvy (vitamin C deficiency) Other lesions resulting from a nutritional deficiency