Violent facial expressions are contractions of certain muscles of the face that are not amenable to conscious control. It is more often caused by neurological pathologies: facial hemispasm, idiopathic blepharospasm, oromandibular dystonia, Huntington's chorea, multisystem atrophy, tics, tardive dyskinesia while taking antipsychotics. It is observed in some ophthalmic diseases and mental disorders. The cause is established on the basis of complaints, anamnesis, neurological examination data and additional diagnostic procedures. Treatment - botulinum therapy, muscle relaxants, neuroleptics, sometimes surgical interventions.