Signing up to such an offer must have caused painful writer's cramp in some Arab capitals.

ECONOMIST: The prince and the president | The

The researchers believe this backs up earlier anecdotal evidence of the link between writer's cramp and OCD.

BBC: writing

Remarkably, those with writer's cramp were five times more likely to display obsessive compulsive symptoms than those with the other conditions.

BBC: writing

Dr Kailash Bhattia, a consultant neurology from the National Hospital for Neurology and Neurosurgery in London, said he had not come across any association between writer's cramp and OCD.

BBC: writing

People who regularly get writer's cramp may be suffering from dystonia, a definition applied to a wide variety of conditions in which people suffer involuntary and often painful sustained muscle spasms.

BBC: writing