Which infectious disease is known for causing internal bleeding and high fevers, often with a high mortality rate?

The answer is Hemorrhagic Fever, which is characterized by internal bleeding and high fevers. This category of diseases includes various viral infections, such as Ebola and dengue fever, that can lead to bleeding complications due to the disruption of blood vessel integrity and the body’s coagulation process. The high mortality rate associated with many hemorrhagic fevers stems from severe complications that can arise quickly and dramatically, including multi-organ failure and shock, particularly if treatment is delayed or not available.

In contrast, the other conditions listed do not share these specific characteristics. Gas Gangrene is primarily a bacterial infection that leads to tissue necrosis and gas production, while hematoma refers to a localized collection of blood outside of blood vessels and does not necessarily involve fever or a high mortality rate. Hodgkin's Disease, a type of lymphoma, is a cancer of the lymphatic system rather than an infectious disease and involves symptoms related to cancer rather than acute infectious processes.