what is focal dystonia
FOCAL DYSTONIA. Focal dystonia is a neurological condition affecting a muscle or group of muscles in a specific part of the body causing an undesirable muscular contraction or twisting. Many sufferers have continuous pain, cramping and relentless muscle spasms due to involuntary muscle movements.ocal dystonia is a neurological condition affecting a muscle or group of muscles in a specific part of the body causing an undesirable muscular contraction or twisting.