Writer's cramp, also called mogigraphia and scrivener's palsy, causes a cramp or spasm affecting certain muscles of the hand and/or fingers. Writer's cramp is a task-specific focal dystonia of the hand. 'Focal' refers to the symptoms being limited to one location (the hand in this case), and 'task-specific' means that symptoms first occur only when the individual engages in a particular activity. Writer's cramp first affects an individual by inhibiting their ability to write.
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“In a restaurant one is both observed and unobserved. Joy and sorrow can be displayed and observed “unwittingly,” the writer scowling naively and the diners wondering, What the hell is he doing?”
—David Mamet (b. 1947)