Description: Segment 1 The intertitles describe the condition of tropical sprue and give the patient's history. The patient, an older white male, is shown. His tongue is shown it is very red. His penis and anus are shown they are red and inflamed. His skin, pigmented with petechial haemorrhages, is shown on his back and torso. The loose texture of his skin is demonstrated. Lesions on his knees are shown. Stool samples are shown. Analysis of his blood in comparison to normal blood is shown using charts and graphs. Intertitles describe the treatment the patient receives. The patient is shown again after 2 months in hospital and 3 weeks at home. The same areas of his body are shown again - they are now recovered. A stool sample is shown. Time start: 00:00:00:00 Time end: 00:06:04:14 Length: 00:06:04:14