--- title: "Teenager Experiences Bizarre Hallucinations in California Emergency Department" url: https://newscentral.site/teenager-experiences-bizarre-hallucinations-in-california-emergency/ language: en publisher: "News Central Site" section: "Science" published: 2026-10-14T10:00:00.000Z updated: 2026-10-15T03:48:33.113Z id: 22ea9401-df75-4867-852b-8ff7f1406db9 source: "Live Science https://www.livescience.com/health/immune-system/diagnostic-dilemma-teenagers-rare-autoimmune-disorder-caused-her-to-hallucinate-a-flying-green-dinosaur" attribution: "Link to https://newscentral.site/teenager-experiences-bizarre-hallucinations-in-california-emergency/ and name News Central Site when you quote or summarize this story." --- # Teenager Experiences Bizarre Hallucinations in California Emergency Department A 16-year-old girl from California experienced hallucinations and hearing voices telling her to harm others, prompting a medical investigation. A 16-year-old girl from California was rushed to an emergency department after experiencing bizarre hallucinations and hearing voices telling her to harm others. The teenager's symptoms included seeing a flying green dinosaur and feeling like she was being followed, which caused significant distress. She exhibited physical signs of agitation in the ER, including trembling, sweating, rapid heartbeat, and shallow breathing. Despite not having a fever, her condition raised concerns among medical staff, who suspected that her hallucinations might be linked to an underlying physical issue. The girl's parents reported that she had experienced these hallucinations for about four years, starting in seventh grade. However, they noted that her interest in school and extracurricular activities had declined significantly over the past month. In contrast, the patient's behavior was described as psychotic only 48 hours before arriving at the ER, sparking debate among medical staff about the timing of her symptoms. Her parents' account highlighted a possible link between her declining academic engagement and her worsening mental state. ER doctors initially suspected that her hallucinations might be caused by physical trauma to the brain, prompting them to perform a CT scan. However, the scan revealed no signs of swelling or bleeding in her head, which led them to consider other explanations for her symptoms. A lumbar puncture was attempted to collect cerebrospinal fluid for further analysis, but it failed to yield any sample that could be tested for abnormalities. This inconclusive result added to the medical mystery surrounding the teenager's bizarre hallucinations and psychotic behavior. The girl's condition continued to perplex medical staff as they struggled to find the underlying cause of her bizarre hallucinations and psychotic behavior. In an attempt to better understand her symptoms, doctors considered referring her to a psychiatric ward for further evaluation. However, due to her fragile state, she was instead admitted to the general pediatric department where she could receive more intensive care. This decision allowed medical professionals to closely monitor her condition while also providing necessary support and treatment. As her second day in hospital progressed, the girl's behavior took a dramatic turn for the worse. She fell into a complete catatonic state, rendering her unable to move or respond to her surroundings. Her symptoms were so severe that she had to be treated with lorazepam, a medication known to calm nervous system activity. The interventional radiologists who performed a second lumbar puncture on the girl reported that her cerebrospinal fluid appeared normal in initial tests. However, it's worth noting that these results may not have been comprehensive or conclusive. Despite her continued struggles with psychotic symptoms, medical staff were faced with another challenge when they attempted to transfer her to a psychiatric ward for further evaluation. Unfortunately, she began experiencing difficulties with feeding herself, forcing doctors to reconsider their plans and continue providing care in the general pediatric department. The diagnosis of autoimmune encephalitis revealed a complex interplay between the body's immune system and its nervous tissue. In this condition, the body produces antibodies that mistakenly target and attack healthy nerve cells, causing inflammation and psychiatric symptoms. Doctors suspected that an underlying tumor might be triggering this response, as proteins from the growth can sometimes resemble those found in nervous tissue. However, after performing MRIs and a PET scan, they were unable to detect any tumors in the patient's body. To combat the inflammation and autoimmune reaction, doctors administered intravenous infusions of steroids to reduce swelling and calm the immune system. They also used immunoglobulin, which is derived from healthy donors and contains antibodies that can help mitigate autoimmune responses. In addition to these treatments, the girl received an infusion of rituximab, a medication that targets and eliminates B lymphocytes, a type of white blood cell responsible for producing autoantibodies. This approach aimed to reduce the production of these harmful antibodies and alleviate the symptoms associated with them. The patient underwent plasmapheresis, a process in which blood is drawn from the body, plasma is separated from the blood cells, and replaced with a fluid before being returned to the patient. This treatment helped remove autoantibodies from the bloodstream over five sessions spanning a month. After almost two months of hospitalization, the girl was discharged and began taking ongoing prescriptions for psychiatric medications as well as immunoglobulin treatments. As her symptoms improved over time, she eventually stopped taking these medications but continued with regular immunotherapy to manage her condition. The teenager's case of autoimmune encephalitis is particularly rare due to its unique characteristics. Research suggests that this condition affects a mere 5 to 8 people out of every 100,000, making it an extremely unusual occurrence. In pediatric patients, the majority of cases are linked to autoantibodies targeting NMDA receptors in the brain. However, the girl's case was caused by anti-NIF autoimmune encephalitis, a distinct and lesser-known variant. Experts have identified various triggers that can lead to this condition in adults, including infections such as tick-borne bacterial illnesses, HIV, and COVID-19. These cases are relatively rare compared to those linked to tumors. The teenager's family reported that she had developed a cough three weeks prior to seeking medical attention at the emergency room. Notably, her relatives who accompanied her on a trip to the Philippines also fell ill with the same symptoms. Further investigation is needed to determine whether the girl's condition was triggered by an infection or another factor entirely. The teenager's case has sparked interest in the medical community due to its unusual presentation of a rare autoimmune disorder. The girl began experiencing vivid hallucinations, including seeing a flying green dinosaur, which are not typically associated with this condition. Further investigation is needed to determine whether the girl's symptoms were triggered by an infection or another factor entirely. The case highlights the complexities and nuances of autoimmune disorders, which can manifest in unique and unpredictable ways. As researchers continue to study these conditions, they may uncover new insights into their underlying causes and potential treatments. Ultimately, this rare case will contribute to a deeper understanding of the intricate relationships between the body's immune system and its many functions. --- Source: [Live Science](https://www.livescience.com/health/immune-system/diagnostic-dilemma-teenagers-rare-autoimmune-disorder-caused-her-to-hallucinate-a-flying-green-dinosaur) Published by News Central Site: https://newscentral.site/teenager-experiences-bizarre-hallucinations-in-california-emergency/