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  2. Herpes simplex encephalitis - Wikipedia

    en.wikipedia.org/wiki/Herpes_simplex_encephalitis

    About 90% of cases of herpes encephalitis are caused by herpes simplex virus-1 (HSV-1), the same virus that causes cold sores. According to a 2006 estimate, 57% of American adults were infected with HSV-1, [ 3 ] which is spread through droplets, casual contact and sometimes sexual contact, though most infected people never have cold sores.

  3. Encephalitis - Wikipedia

    en.wikipedia.org/wiki/Encephalitis

    Causes of encephalitis include viruses such as herpes simplex virus and rabies virus as well as bacteria, fungi, or parasites. [1] [2] Other causes include autoimmune diseases and certain medications. [2] In many cases the cause remains unknown. [2] Risk factors include a weak immune system. [2]

  4. Rectal bleeding - Wikipedia

    en.wikipedia.org/wiki/Rectal_bleeding

    Rectal bleeding refers to bleeding in the rectum, thus a form of lower gastrointestinal bleeding.There are many causes of rectal hemorrhage, including inflamed hemorrhoids (which are dilated vessels in the perianal fat pads), rectal varices, proctitis (of various causes), stercoral ulcers, and infections.

  5. Hemorrhoid - Wikipedia

    en.wikipedia.org/wiki/Hemorrhoid

    A skin tag may remain after the healing of an external hemorrhoid. [4] While the exact cause of hemorrhoids remains unknown, a number of factors that increase pressure in the abdomen are believed to be involved. [4] This may include constipation, diarrhea, and sitting on the toilet for long periods. [3] Hemorrhoids are also more common during ...

  6. Acute necrotizing encephalopathy - Wikipedia

    en.wikipedia.org/wiki/Acute_necrotizing...

    Acute necrotizing encephalopathy (ANE) or sometimes necrotizing encephalitis or infection-induced acute encephalopathy (IIAE) is a rare type of brain disease (encephalopathy) that occurs following a viral infection. [4] Most commonly, it develops secondary to infection with influenza A, influenza B, and the human herpes virus 6. ANE can be ...

  7. Autoimmune encephalitis - Wikipedia

    en.wikipedia.org/wiki/Autoimmune_encephalitis

    Autoimmune encephalitis (AIE) is a type of encephalitis, and one of the most common causes of noninfectious encephalitis. It can be triggered by tumors , infections , or it may be cryptogenic . The neurological manifestations can be either acute or subacute and usually develop within six weeks.

  8. Limbic encephalitis - Wikipedia

    en.wikipedia.org/wiki/Limbic_encephalitis

    The majority of cases of limbic encephalitis are associated with a tumor (diagnosed or undiagnosed). In cases caused by tumor, recovery can only occur following complete removal of the tumor, which is not always possible. Limbic encephalitis is classified according to the auto-antibody that causes the disease. The most common types are:

  9. Meningoencephalitis - Wikipedia

    en.wikipedia.org/wiki/Meningoencephalitis

    Other causes of meningoencephalitis include granulomatous meningoencephalitis and vasculitis. The fungus, Cryptococcus neoformans , can symptomatically manifest within the central nervous system ( CNS ) as meningoencephalitis, with hydrocephalus being a very characteristic finding due to the unique thick polysaccharide capsule of the organism.