Symptoms of akathisia may vary from a mild sense of disquiet or anxiety to a sense of terror. People typically pace for hours because the pressure on the knees reduces the discomfort somewhat; once their knees and legs become fatigued and they are unable to continue pacing, they sit or lie down, although this does not relieve the akathisia. When misdiagnosis occurs in antipsychotic neuroleptic-induced akathisia, more antipsychotic may be prescribed, potentially worsening the symptoms. Neuro-psychologist Dennis Staker had drug-induced akathisia for two days. His description of his experience was this: "It was the worst feeling I have ever had in my entire life. I wouldn't wish it on my worst enemy. " Many patients describe symptoms of neuropathic pain akin to fibromyalgia and restless legs syndrome. In Han et al. (2013), the authors describe restless legs syndrome's relation to akathisia, "Some researchers regard RLS as a 'focal akathisia' [in the legs]. " Although these side effects disappear quickly and remarkably when the medication is stopped, tardive, or late-persisting akathisia may go on long after the offending drug is discontinued, sometimes for a period of years.