<Tr> <Td> Drug withdrawal </Td> <Td> Opioid withdrawal, barbiturates withdrawal, cocaine withdrawal, and benzodiazepine withdrawal </Td> </Tr> <Tr> <Td> Serotonin syndrome </Td> <Td> Harmful combinations of psychotropic drugs </Td> </Tr> <P> The presence and severity of akathisia can be measured using the Barnes Akathisia Scale, which assesses both objective and subjective criteria . Precise assessment of akathisia is problematic, as it is difficult to differentiate from a multitude of disorders with similar symptoms . In a study of movement disorders induced by neuroleptics, akathisia was found in only 26% of patients originally diagnosed with akathisia . The primary distinguishing features of akathisia in comparison with other syndromes are primarily subjective characteristics, such as the feeling of inner restlessness . Akathisia can commonly be mistaken for agitation secondary to psychotic symptoms or mood disorder, antipsychotic dysphoria, restless legs syndrome (RLS), anxiety, insomnia, drug withdrawal states, tardive dyskinesia, or other neurological and medical conditions . </P> <P> Additionally, the controversial diagnosis of "pseudoakathisia" is given, as noted by Mark J. Garcia . In his article discussing akathisia among adults with severe and profound intellectual disability, he describes pseudoakathisia as "comprising all the symptoms of abnormal movements seen with akathisia, but without a sense of restlessness". </P>

The symptoms of tardive dyskinesia are all reversible upon cessation of the medication