The big difference is that it's presented as an "acute" but not chronic illness. But why can't be chronic as well? Plus many cases of ME/CFS come on very acutely....Fatigue and pain are not mentioned but I imagine fatigue in particular is major. Encephalitis is actually inflammation. Headache is very common - something until recently I've never had. Could ME/CFS/FM patients with headache be in the encephalitis group?
Encephalitis is acute inflammation (swelling up) of the brain resulting either from a viral infection or when the body's own immune system mistakenly attacks brain tissue. The most common cause is a viral infection.
Adult patients with encephalitis present with acute onset of fever, headache, confusion, and sometimes seizures. Younger children or infants may present irritability, poor appetite and fever.[3] Neurological examinations usually reveal a drowsy or confused patient. Stiff neck, due to the irritation of the meninges covering the brain, indicates that the patient has either meningitis or meningoencephalitis.
In more severe cases the person may experience very severe headaches, nausea, vomiting, confusion, disorientation, memory loss, speech problems, hearing problems, hallucinations, as well as seizures and possibly coma. In some cases the patient can become aggressive.
Examination of the cerebrospinal fluid obtained by a lumbar puncture procedure usually reveals increased amounts of protein and white blood cells with normal glucose, though in a significant percentage of patients, the cerebrospinal fluid may be normal.
Primary (infectious) encephalitis: according to the NHS (UK), there are three main categories of viruses: 1. Common viruses, such as HSV (herpes simplex virus) or EBV (Epstein Barr virus). 2. Childhood viruses, such as measles and mumps. 3. Arboviruses, which are spread by mosquitoes, ticks and other insects, and include Japanese encephalitis, West Nile encephalitis and tick borne encephalitis.
Secondary (post-infectious) encephalitis: could be caused by a complication of a viral infection. Symptoms start to appear days and even weeks after the initial infection. The patient's immune system treats healthy brain cells as foreign organisms that need to be destroyed, and attacks them. We don't know why the immune system goes wrong and does this.
Encephalitis is more likely to affect children, elderly people, individuals with weakened immune systems, and people who live in areas where mosquitoes and ticks that spread specific viruses are common.
Encephalitis is acute inflammation (swelling up) of the brain resulting either from a viral infection or when the body's own immune system mistakenly attacks brain tissue. The most common cause is a viral infection.
Adult patients with encephalitis present with acute onset of fever, headache, confusion, and sometimes seizures. Younger children or infants may present irritability, poor appetite and fever.[3] Neurological examinations usually reveal a drowsy or confused patient. Stiff neck, due to the irritation of the meninges covering the brain, indicates that the patient has either meningitis or meningoencephalitis.
In more severe cases the person may experience very severe headaches, nausea, vomiting, confusion, disorientation, memory loss, speech problems, hearing problems, hallucinations, as well as seizures and possibly coma. In some cases the patient can become aggressive.
Examination of the cerebrospinal fluid obtained by a lumbar puncture procedure usually reveals increased amounts of protein and white blood cells with normal glucose, though in a significant percentage of patients, the cerebrospinal fluid may be normal.
Primary (infectious) encephalitis: according to the NHS (UK), there are three main categories of viruses: 1. Common viruses, such as HSV (herpes simplex virus) or EBV (Epstein Barr virus). 2. Childhood viruses, such as measles and mumps. 3. Arboviruses, which are spread by mosquitoes, ticks and other insects, and include Japanese encephalitis, West Nile encephalitis and tick borne encephalitis.
Secondary (post-infectious) encephalitis: could be caused by a complication of a viral infection. Symptoms start to appear days and even weeks after the initial infection. The patient's immune system treats healthy brain cells as foreign organisms that need to be destroyed, and attacks them. We don't know why the immune system goes wrong and does this.
Encephalitis is more likely to affect children, elderly people, individuals with weakened immune systems, and people who live in areas where mosquitoes and ticks that spread specific viruses are common.