Background: Primary writing tremor (PWT) is a rare condition; tremor occurs primarily while writing rather than during other tasks.
Phenomenology shown: We illustrate the phenomenology of PWT and point out associated subtle dystonic posturing on neurological examination.
Educational value: PWT is a tremor disorder that shares clinical features with both dystonia and essential tremor.
Keywords: Primary writing tremor; dystonia; essential tremor; writer’s cramp.