12-Year-Old Girl's Tragic Death: Autoimmune Encephalitis Misdiagnosis (2025)

A 12-year-old girl's tragic death at a psychiatric unit has shed light on a potentially treatable brain disorder, sparking a critical inquest. Mia Lucas, a vibrant young girl with dreams of opening a beauty salon or becoming a vet, passed away at the Becton Centre in Sheffield on January 29, 2024. The inquest revealed that Mia was suffering from autoimmune encephalitis, a rare and complex condition that can lead to severe psychiatric symptoms, including psychosis. This discovery has raised questions about the medical care she received and the potential for early intervention.

The investigation into Mia's death began with her being found unresponsive in her room at the Becton Centre. Over the course of the inquest, it was determined that Mia had been experiencing extreme psychiatric symptoms, including hearing voices and hallucinations, leading to her being sectioned under the Mental Health Act. Her family had taken her to the emergency department of Queen’s Medical Centre (QMC) in Nottingham, where doctors initially found no physical cause for her psychosis.

A key moment in the inquest came when pathologist Prof Marta Cohen presented new information from blood tests, conclusively proving Mia had autoimmune encephalitis. This evidence was crucial in establishing the medical cause of her death, which was determined to be 'compression of the neck' following 'acute psychosis' resulting from the brain disorder. The expert neurologist, who had previously stated it was only 'possible' Mia had the disorder, was recalled to the witness box and confirmed it was now 'definitive' that she had autoimmune encephalitis.

The inquest also highlighted the challenges in diagnosing autoimmune encephalitis. Consultant paediatric neurologist Mike Taylor, who conducted an independent review, noted the rarity of the condition and the difficulty in identifying it. He suggested that further diagnostic tests, such as a lumbar puncture and EEG, could have been beneficial but acknowledged the complexities doctors face in such situations. The treatments for autoimmune encephalitis, Dr Taylor warned, can have severe side effects, including the risk of death.

Mia's mother, Chloe Hayes, and her family, have been deeply affected by the inquest's findings. Ms. Hayes described her daughter's interests and ambitions, painting a picture of a bright young girl with a promising future. The inquest has not only brought attention to the importance of early detection and treatment of autoimmune encephalitis but also sparked a broader conversation about the challenges in managing severe psychiatric conditions in young people.

12-Year-Old Girl's Tragic Death: Autoimmune Encephalitis Misdiagnosis (2025)
Top Articles
Latest Posts
Recommended Articles
Article information

Author: Edmund Hettinger DC

Last Updated:

Views: 5785

Rating: 4.8 / 5 (78 voted)

Reviews: 85% of readers found this page helpful

Author information

Name: Edmund Hettinger DC

Birthday: 1994-08-17

Address: 2033 Gerhold Pine, Port Jocelyn, VA 12101-5654

Phone: +8524399971620

Job: Central Manufacturing Supervisor

Hobby: Jogging, Metalworking, Tai chi, Shopping, Puzzles, Rock climbing, Crocheting

Introduction: My name is Edmund Hettinger DC, I am a adventurous, colorful, gifted, determined, precious, open, colorful person who loves writing and wants to share my knowledge and understanding with you.