Early-onset syndromes
hours to days after drug initiation
reversible
Acute dystonic<unk> 
involuntary, uncoordinated skelatal muscle contraction
Akathisia
subjective sensation of intense motor restlessness
may be misdiagnosed as manifestation of psychiatric disease
Parkinsonism
onset weeks to months after starting medication
similar presentation to Parkinson's disease (e.g. cogwheel rigidity, pill-rolling tremor, shuffling gait, bradykinesia)
Tardive dyskinesia
usually irreversible or only partially reversible
associated with prolonged use of antipsychotics
stereotyped, repetitive facial movements (e.g. tongue protrusion, grimacing, lip smacking)
hours to days after drug initiation
reversible
Acute dystonic<unk> 
involuntary, uncoordinated skelatal muscle contraction
Akathisia
subjective sensation of intense motor restlessness
may be misdiagnosed as manifestation of psychiatric disease
involuntary, uncoordinated skelatal muscle contraction
subjective sensation of intense motor restlessness
may be misdiagnosed as manifestation of psychiatric disease
onset weeks to months after starting medication
similar presentation to Parkinson's disease (e.g. cogwheel rigidity, pill-rolling tremor, shuffling gait, bradykinesia)
usually irreversible or only partially reversible
associated with prolonged use of antipsychotics
stereotyped, repetitive facial movements (e.g. tongue protrusion, grimacing, lip smacking)
Extrapyramidal reaction
Chorea
Sedation 
Sydenham's chorea
Hallucinations
Neuroleptic malignant syndrome
Altered mental status 
Serotonin syndrome