Characterized by or relating to erethism; showing excessive nervousness or irritability.
From 'erethism' plus the suffix '-ic,' following the pattern of medical terminology. The '-istic' variant adds an additional layer of specificity, emphasizing the characteristic nature of the condition.
An erethistic person in the 1800s would have been prescribed everything from bloodletting to ice baths, as doctors assumed stimulation of the nerves needed to be calmed through equally dramatic physical interventions.
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