Symptoms of HFRS usually develop within one to two weeks after exposure to infectious material, but in rare cases, they may take up to eight weeks to develop. In Nephropathia epidemica, the incubation period is three weeks. Initial symptoms begin suddenly and include intense headaches, back and abdominal pain,<unk> , chills, nausea, and blurred vision. Individuals may have flushing of the face, inflammation or redness of the eyes, or a rash. Later symptoms can include low blood pressure, acute shock, vascular leakage, and acute kidney failure, which can cause<unk> e fluid overload. The<unk> ity of the disease varies depending upon the virus causing the infection. Hantaan and Dobrava virus infections usually cause<unk> e symptoms, while Seoul, Saaremaa, and Puumala virus infections are usually more moderate. Complete recovery can take weeks or months. The course of the illness can be split into five phases: ;Febrile phase:Symptoms include redness of cheeks and nose,<unk> , chills, sweaty palms, diarrhea, malaise, headaches, nausea, abdominal and back pain, respiratory problems such as the ones common in the influenza virus, as well as gastro-intestinal problems. These symptoms normally occur for three to seven days and arise about two to three weeks after exposure. ;Hypotensive phase: This occurs when the blood platelet levels drop and symptoms can lead to tachycardia and hypoxemia. This phase can last for two days. ;Oliguric phase: This phase lasts for three to seven days and is characterised by the onset of<unk>  failure and proteinuria. ;Diuretic phase: This is characterized by diuresis of three to six litres per day, which can last for a couple of days up to weeks. ;Convalescent phase: This is normally when recovery occurs and symptoms begin to improve. This<unk>  can also be fatal. In some cases, it has been known to cause permanent<unk>  failure.
Hantavirus hemorrhagic fever with renal syndrome
Crimean–Congo hemorrhagic fever
Viral hemorrhagic fever
Post-Ebola virus syndrome
Argentine hemorrhagic fever
Bolivian hemorrhagic fever
Dengue fever
Omsk hemorrhagic fever