In 1992 he left the band, after he was diagnosed with focal dystonia, affecting his right hand.
Mohr–Tranebjærg syndrome (MTS) is a rare X-liked recessive syndrome also known as Deafness-dystonia syndrome and caused by mutation in the TIMM8A gene.
Myoclonus Dystonia is in most cases caused by loss-of-function-mutations in the epsilon sarcoglycan gene (SGCE).
Involuntary movements can take many forms such as ballism, chorea or dystonia and usually only affect one side of the body or one limb in particular.
The field of Movement Disorders includes the following areas: Parkinson's disease and parkinsonism, ataxia, dystonia, chorea and Huntington's disease, tics and Tourette syndrome, myoclonus and startle, restless leg syndrome, stiff person syndrome, tremor and essential tremor, and gait disorders.