Dysgraphia
Dysgraphia is characterised by the person having difficulty converting the sounds of language into written form, or knowing which alternate spelling to use for each sound. A person with dysgraphia may write their letters in reverse, have trouble recalling how letters are formed, or when to use lower or upper case letters. They may also struggle to form written sentences with correct grammar and punctuation, with common problems including ommitting words, words ordered incorrectly, incorrect verb and pronoun usage and word ending errors. They have extreme difficulty getting their thoughts both in order and then down on paper and many also have dyslexia. People with dysgraphia may speak more easily and fluently than they write.
Source: https://dsf.net.au/what-is-dysgraphia/
One of the main signs of dysgraphia is messy handwriting. These are some of the key handwriting skills kids may struggle with:
Forming letters
Spacing letters correctly on the page
Writing in a straight line
Making letters the correct size
Holding paper with one hand while writing with the other
Holding and controlling a pencil or other writing tool
Putting the right amount of pressure on the paper with a writing tool
Maintaining the right arm position and posture for writing