Acute hemorrhagic leukoencephalitis
MONDO:0011716Acute hemorrhagic leukoencephalitis(AHL) is a veryrareform of acute disseminated encephalomyelitis that usuallyresults indeath. It is characterized by a brief but intense attack of inflammation in the brain and spinal cord that damages the myelin -- the protective covering of the nerve fibers. It may also cause bleeding in the brain, leading to damage of the white matter. Symptoms usually come on quickly, beginning with symptoms such as fever, neck stiffness, fatigue, headache, nausea vomiting,seizures, and coma.AHL has a very poor prognosis, with rapid deterioration and death usually occurring within days to one week after onset of symptoms because of severe inflammation in the brain. Although the exact cause is unclear,AHL usually followsaviral infection, or less often, vaccination for measles, mumps, or rubella. Some researchers think that an infection or vaccination can initiate an autoimmune process in the body thus leading to AHL.
Also known as: AHL, acute hemorrhagic leukoencephalitis, AHLE, Ahl
11 clinical trials for this condition and its sub-types.
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Scientists compare immune responses to viral and bacterial infections in ICU patients
Knowledge-focused OngoingThis study looks at how the immune system of patients in the intensive care unit (ICU) responds to severe infections caused by viruses or bacteria. Researchers will take extra blood samples from 38 adults to analyze immature granulocytes, a type of immune cell. The goal is to see…
Phase: NA • Sponsor: University Hospital, Limoges • Aim: Knowledge-focused
Last updated Jun 28, 2026 00:00 UTC
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Massive review of viral meningitis cases aims to sharpen diagnosis
Knowledge-focused OngoingThis study looks back at 4000 patients who had a suspected viral infection of the brain or spinal cord. Researchers will analyze which viruses were found and how the illness progressed in different groups, including children, adults, and people with weakened immune systems. The g…
Sponsor: IRCCS Azienda Ospedaliero-Universitaria di Bologna • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:12 UTC