Focal hand dystonia means (FHD) "musician’s cramp", refers to a condition in which the touch responses to one finger overlap those of another, leading to clumsiness, fatigue, and involuntary movements.

Focal hand dystonia (FHD) is a neurological movement disorder that affects the hand and sometimes the arm. It is also known as musician's cramp or writer's cramp because it commonly affects musicians, writers, and other skilled workers who perform repetitive hand movements.

FHD is characterized by involuntary muscle contractions that cause abnormal hand movements and postures. It can affect different parts of the hand, such as the fingers, thumb, or wrist, and can interfere with fine motor skills, such as writing, playing an instrument, or typing.

FHD is thought to be caused by a combination of genetic and environmental factors, and it is often associated with overuse of the affected hand or a specific activity that involves repetitive movements. Treatment may include physical therapy, medication, and/or surgery.


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