Glynn Parry is suffering from a rare genetic condition known as familial hemiplegic migraines which affects the neurotransmitters in the brain. In this condition, one hemisphere of the brain temporarily shuts down, causing paralysis.
The attack comes without any warning and can be triggered by anything from sunlight and stress to alcohol and aromas.
"If I'm lucky, I get a warning and see blurred lights and then self-preservation kicks in. I try to find a bench, a chair or a bed to land on and lie down on, because I know I've got a matter of minutes before I collapse. It leaves me completely paralyzed down my left side and the attack can be so bad I can't move a muscle, I can't even blink. I have two to three attacks a week. It's a difficult thing to live with and it impacts on every aspect of my life", Parry said.