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In page Athymhormia:

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It is characterized by an absence of voluntary motion without any apparent motor deficit, and patients often describe a complete mental void or blank. This is accompanied by reduced affect or emotional concern (athymhormy) and often by compulsions, repetitive actions, or tics. After stimulation from the outside, such as a direct command, the patient is able to move normally and carry out complex physical and mental tasks for as long as they are prompted to continue.[citation needed]