Dysarthria is a motor speech disorder that affects how clear and understandable a person’s speech is. Between 50-90% of people with CP have dysarthria.
An international study recently published in the journal Nature Genetics has provided the first firm evidence that for a substantial number of people, their cerebral palsy (CP) may be caused by a genetic mutation, or mis-spelling in the body’s DNA blueprint.
"In addition to commonly associated environmental factors, genomic factors may cause cerebral palsy. We performed whole-exome sequencing of 250 parent–offspring trios, and observed enrichment of damaging de novo mutations in cerebral palsy cases."
Spasticity is usually caused by central nervous system injuries, such as brain injuries or spinal cord injuries. Spasticity is a little different from stiffness.