Malaria, a reference to the "bad air" (mala aria) around swamps which was believed by the Romans to cause the same kinds of debilitating diseases which still exist in our modern world.

Formerly thought to be an unwholesome condition of the atmosphere which results from the exhalations of marshy districts: Many workers on the Panama Canal project died of malaria which medical science did not realize was caused by mosquito bites.

Malaria produces severe fever and, in some cases, complications that affect the kidneys, liver, brain, blood, and can even cause death.

There is a "short history" about malaria which is
informative and made more interesting with illustrations.

There is also another "informative description"
about those who discovered the real causes of malaria.

Falciparum malaria with gastrointestinal manifestations predominating, characterized by cold, clammy skin, and hypotension.

Falciparum malaria is characterized by paroxysms of fever occurring at irregular intervals and often by the localization of the organism in a specific organ, causing capillary blockage in the brain, lungs, intestinal mucosa, spleen, and kidneys.