This rare scary mental disease is characterized by the belief that the “alien hand” has a mind of its own and is not in control of the owner. The hand acts and moves at its own free will without the person’s knowledge. It can be involuntary reaching and touching or stroking the face or the hair without the person’s will. In extreme cases, it can be ripping off clothes, self-inflicted choking or punching, or even scratching the body to the point of blood. Some people can develop alien hand syndrome as a result of other illnesses such as stroke, trauma, or Alzheimer’s Disease. Connie Lynn Culler explains that it can also be linked to brain surgeries in which the two cerebral hemispheres of the brain have been separated.
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