Symptoms and signs of malaria.

In addition to asking their patients about recent foreign travel, Canadian doctors need to be aware of what features to ask about in considering imported illnesses. Of these illnesses, malaria is one of the most common and serious. Because of its cerebral renal, pulmonary and intestinal complications, falciparum malaria must be distinguished from non-falciparum forms. Anyone with a fever who has arrived recently from an endemic area should be tested for malaria. In addition, headache, malaise, myalgias, arthralgias, low back pain, nausea, vomiting, diarrhea or cough should raise suspicion. Malaria should be remembered as a cause of coma. Persons taking any form of drug prophylaxis for malaria are not protected absolutely and those who are semi-immune can become severely ill occasionally.