[…] the extrapyramidal reaction, the clinical can be seen in the following three categories: tremor paralysis syndrome; sit still (akathisia); acute tension disorders such as torticollis
[healthfrom.com]
Extrapyramidal Symptoms: Akathisia, agitation, motor restlessness, dystonic reactions, trismus, torticollis, opisthotonus, oculogyric crises, tremor, muscular rigidity, akinesia
[rxlist.com]
These reactions are characterized by spastic contraction of discrete muscle groups and may include torticollis, opisthotonos, carpopedal spasm, trismus, difficulty swallowing
[drugs.com]