If you’ve ever done any research on autoimmune diseases, you know that they are incredibly common, affecting more than 23.5 million Americans.
Autoimmune disorders occur when someone’s immune system begins attacking and destroying healthy body tissue by mistake. The most common types of autoimmune disease are rheumatoid arthritis, Type 1 diabetes, lupus, and multiple sclerosis.
In 2007, an autoimmune disease was identified called anti-NMDA receptor encephalitis. This disease occurs when antibodies turn on the brain and cause it to swell, according to CBS station KYW in Philadelphia.
Symptoms of anti-NMDA receptor encephalitis include, but are not limited to, personality changes, paranoia, mania, catatonia, and acting “possessed.”
A study in Innovations in Clinical Neuroscience in 2011 reported that the disease is fatal in 25 percent of the cases.
The video above features a young girl suffering from the disease before she received treatment. As you can see, the effects are quite disturbing.