Which symptom does NOT typically indicate a severe case of malaria?

Nausea and diarrhea are common gastrointestinal symptoms that can occur with many infections, including malaria, but they are not typically used to categorize malaria as a severe case. Severe malaria is more often associated with symptoms such as high fever, significant shivering, and complications like severe anemia, respiratory distress, or other neurological issues. Chronic anemia is of particular concern as it may indicate the severity of malaria-induced hemolysis or other complications resulting from the disease.

In contrast, fever and shivering are hallmark symptoms experienced during acute malaria episodes and are crucial for diagnosis and assessing the severity of the disease. Therefore, while nausea and diarrhea may accompany malaria, they do not specifically signify a severe form of the infection.