<unk>  (or agraphia) is a deficiency in the ability to write, regardless of the ability to read, not due to intellectual impairment. People with<unk>  often can write on some level, but often lack co-ordination, and may find other fine motor tasks such as tying shoes difficult. It often does not affect all fine motor skills.  They can also lack basic spelling skills (having difficulties with p,q,b,d), and often will write the wrong word when trying to formulate thoughts (on paper). In childhood, the disorder generally emerges when they are first introduced to writing. They make inappropriately sized and spaced letters, or write wrong or misspelled words despite thorough instruction. Children with the disorder may have other learning disabilities; however, they usually have no social or other academic problems. Cases of<unk>  in adults generally occur after some  neurological trauma or it might be diagnosed in a person with Tourette syndrome, ADHD or an autism spectrum disorder such as Asperger's. The DSM IV identifies<unk>  as a "Disorder of Written Expression" as "writing skills (that) ...are substantially below those expected given the person's ...age, measured intelligence, and age-appropriate education."
The cause of<unk>  is unknown but whenever it occurs in an adult, it is usually caused by head trauma, some types of diseases or brain damage.  When it is found in children there is a tendency for there to be multiple<unk> s in his or her family.  A parent or close relative of the child tend to also show signs of<unk> .
There have been few studies on<unk> .
Dysgraphia
Hypersexuality
Paraphilia
Sexual obsessions
Dyslexia
Agnosia
Dysprosody
Dyssomnia