Throughout his adult life Alan Thomas has been accused of being drunk by people who don't know him.
But in reality the 55-year-old is living with the rare and degenerative disorder ataxia which can leave sufferers in a wheelchair and unable to perform the simplest of tasks.
The condition causes damage to the cerebellum, the part of the brain responsible for coordinating movement, and typically leads to slurred speech, stumbling, falling, and problems with coordination.
