The mystery illness that has put this Brookvale couple’s life on hold

Key points

• Fernando Rezende Silveira, 44, has been unable to get a clear diagnosis for more than a year, despite tests by doctors in Australia and overseas. His condition has left him largely reliant on a wheelchair and has stopped the couple's dancing and travel.
• Doctors have given a provisional diagnosis of seronegative autoimmune encephalitis, but treatment was stopped when he did not respond. Samples have been sent to the United States for testing.
• His wife, Fernanda De Almeida Santos Cordeiro, has left her job to become his full-time carer.