On an ordinary day, Claire Kutty, a secondary school English teacher in her early forties, hears a low, rumbling sound while driving her daughter Ashley to their school.
This innocuous noise starts to cause Claire migraines, nosebleeds, insomnia and even visions. No obvious source or medical cause can be found – and no-one else can hear it.
https://www.bbc.co.uk/programmes/m00255ff
4 episodes of 45 minutes - not sure if they will all be on line.