cocaine bug
n.pl.— «Hallucinations are rarely present. One, the so-called cocaine-bug, and which occurred in my patient, is believed by Erlenmeyer to be due to disseminated scotoma. Spots of dirt are seen on white surfaces, as noted in this patient, the fingers seemed black and dirty.» —“Acute Cocaine-Poisoning” by M.V. Ball Medical and Surgical Reporter Nov. 16, 1895. (source: Double-Tongued Dictionary)
Further reading
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