Lack of Facial Expressions: Symptoms & Signs

Medically Reviewed on 9/10/2019

A lack of facial expressions can occur in various conditions. Catatonia is a term that is used to describe a state of stupor or unresponsiveness in a person who is otherwise awake. Lack of facial expressions is one sign of catatonia, which can occur in association with a psychiatric disorder, like schizophrenia. Diseases that cause damage to the brain and its function can also lead to a lack of responsiveness, including a lack of facial expressions. Examples include brain trauma and encephalitis.

Other causes of lack of facial expressions

  • Brain Trauma
  • Facial Paralysis
  • Neuroleptic Malignant Syndrome
  • Nonconvulsive Status Epilepticus
  • Vegetative State


Schizophrenia is the most disabling mental illness. See Answer

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Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.