Malaria Common Symptoms, Causes, Complications & Treatment

2. Symptoms. It happens differently in different people as the parasites may stay inactive for some period. Typically, the signs are displayed within 10 days (up to 1 month) and are as follows: shaking chills, fever, sweating, digestion issues (nausea, vomiting, diarrhea), headaches, convulsions, anemia, pain in the muscles.