Hemorrhagic fever refers to a group of illnesses caused by several different viruses, leading to severe symptoms, including fever, bleeding, and organ failure. Common types include Ebola, Dengue, and Marburg fever. These diseases are often transmitted through contact with infected animals or humans, and outbreaks can occur in specific regions, particularly in tropical areas. Symptoms typically begin with high fever, fatigue, and muscle pain, followed by more severe manifestations like bleeding from the gums or internal organs. Diagnosis is usually confirmed through laboratory tests, and treatment focuses on supportive care, as there are no specific antiviral medications for most hemorrhagic fevers.