This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. Impairment of the ability to write, usually caused by brain dysfunction or disease.

n. A language disorder that affects a person's ability to write.

n. impaired ability to learn to write

"Students with writing disorders such as dysgraphia, the inability to form letters or numbers, or those with dyslexia can have difficulty spelling and making logical transitions in their writing assignments."

learning disability    learning disorder   

dyscalculia    dyslexia