After 24 or 48 hours the patients start to complain about the abdominal pain. Vomiting and diarrhea strengthen and then melena appears. Melena is a stiff black stool with a very unpleasant odor that is formed by the contents of the intestine and stomach and basically contains blood. In general, melena is a serious symptom that indicates the actual gastrointestinal bleeding. On the background of the above-mentioned hemorrhagic fever symptoms, the patients experience dehydration.
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