Background OnabotulinumtoxinA has demonstrated significant benefit in adult focal spasticity. This study reviews the injection patterns (i.e., muscle distribution, dosing) of onabotulinumtoxinA ...

Spasticity is a condition in which muscles become stiff and tight from contracting for long periods. It's usually caused by conditions that affect the central nervous system, which is responsible ...

What spasticity is, is an abnormally contracted or overtight muscle. So the muscle is like this. It's like a little ball that doesn't want to be stretched. And so that's why you have stiffness.