Atelochiria, also known as alien hand syndrome (AHS), is a rare neurological disorder characterized by involuntary movements of one hand, in opposition to the individual's intention and control. The condition typically occurs following brain injury or surgical intervention on the corpus callosum, the part of the brain that connects the left and right hemispheres. This disconnection disrupts the normal communication between the hemispheres, leading to conflicting commands being sent to the hand.
Individuals affected by atelochiria often describe their afflicted hand as acting independently and "having a mind of its own," with movements being uncoordinated, uncontrollable, and sometimes purposeful. The hand may perform seemingly autonomous actions such as grasping, manipulating objects, or buttoning a shirt, without conscious control or volition from the individual.
At times, the person may exhibit a loss of recognition or sense of ownership over their own hand, experiencing a sense of dissociation or foreignness. The disorder may cause significant distress and frustration due to the interference it imposes on daily activities and personal autonomy.
Treatment for atelochiria focuses on addressing any underlying neurological conditions, if possible, and managing the symptoms. Occupational and physical therapy techniques can be employed to enhance coordination, regain control, and mitigate the hand's involuntary movements. Additionally, psychotherapy may be beneficial in helping individuals cope with the psychological and emotional impact of the disorder.
