Agraphia is a neurological disorder that affects a person's ability to write. It is typically characterized by difficulty forming letters, words, and sentences, as well as difficulty with fine motor coordination. Agraphia can develop suddenly or gradually, and can be caused by a variety of conditions, including stroke, traumatic brain injury, and degenerative diseases. Symptoms can include difficulty forming words, letters, and sentences, poor handwriting, and trouble with spellings. It can also manifest as difficulty with spatial orientation of letters, difficulty with writing speed, and difficulty with copying words and phrases.