‘Rare and little known’? Horseshit. It’s the signature effect of neuroleptics (miscalled ‘antipsychotics’), and was part of the basis for neuroleptics being named among the forms of physical torture by the UN in 1986. UN Doc. E/CN.4/1986/15, para. 119 (page 29), includes: ‘Administration of drugs, in detention or psychiatric institutions …. neuroleptics, that cause trembling, shivering and contractions, but mainly make the subject apathetic and dull his [or her] intelligence’ Breggin wrote tons about akathisia in his 1983 scientific book Psychiatric Drugs: Hazardous to the Brain. It was well known in the survivor community before that time. I was forcibly drugged in 1977 and it was known as a common effect then. So common that there were anti-cholinergic drugs they gave to counter that effect, including ‘cogentin’. Those drugs actually only masked the akathisia and eliminated some of the more obvious manifestations, didn’t relieve it.