Focal dystonia is a painless hand condition in which the fingers either curl into the palm or extend outward without control. (There are also other forms of focal dystonia which can affect other parts of the body.) David suffered from this debilitating hand condition from 1984 to 1996. He cured himself completely by doing pioneering work with the large muscles of the armpit and shoulder. Many injured musicians from around the world have been helped by working with him and learning his methods.
Curing Focal Dystonia (Guitar Review) 2006, or How to Play the Guitar with Large Muscles. The article is full of detailed information on how David cured himself and others of focal dystonia, by engaging large muscles in the use of both right and left hands.
Details of David’s personal experiences can be found in two older articles from Guitar Review and Classical Guitar magazines which are reproduced on this website:
An excerpt from Hungarian documentary filmmaker Eszter Hajdu’s Demon Hands about different people’s experience with focal dystonia. Leisner describes and demonstrates some of the basic principles that he discovered along his path to curing focal dystonia in himself and others.