It's a pitiful illness:
Ever since her first grandchild Megan was born, Mrs Richmond has had to remain emotionally reserved.
She said: 'I want to just sweep her up into my arms and say I love you. But I am afraid it could be dangerous for both of us.
It could trigger an episode and I could collapse on the floor, injuring Megan and myself. 'It is quite bizarre to think I can't tell my family I love them without falling over.'
Mrs Richmond, from Pitsmoor, Sheffield, has suffered from sleeprelated illnesses cataplexy and narcolepsy since her late teens but was diagnosed only in her 30s.