Drawing of a Parkinson's disease patient face showing hypomimia. Depiction appeared in Nouvelle iconographie de la Salpétrière, tome 1 (1888)
Hypomimia (masked faces, masking of faces, mask-like facial expression), a medical sign, is a reduced degree of facial expression. It can be caused by motorimpairment (for example, weakness or paralysis of the facialmuscles), as in Parkinson's disease, or by other causes, such as psychological or psychiatric factors (for example, if a patient does not feel emotions and thus does not show any expression).[1]
Persons receiving excessive Botox treatments and thus losing disproportionate facial expression features may be incorrectly identified as suffering from hypomimia.
