noun
agraphia
Medical term for the acquired inability to write, typically due to brain damage or neurological disorder. Not used in everyday conversation.
脳卒中後、書字不能症の症状が現れた。
After the stroke, symptoms of agraphia appeared.
書字不能症は失語症と併発することがある。
Agraphia can co-occur with aphasia.
Compound of 書字 (writing characters) + 不能 (inability) + 症 (condition/syndrome). A modern medical coinage, likely calqued from Western nosology.