What is idiopathic transverse myelitis, the neurological condition Helen Haines' alleged attacker has?

The antheral alleged to person attacked autarkic MP Helen Haines connected Monday, Brendan Nugent, appeared successful tribunal Oct. 21. He was charged with unsafe driving causing superior injury, intentionally causing superior injury, the national discourtesy of causing harm to a Commonwealth nationalist official, arsenic good arsenic cultivating and processing cannabis.