NEET PG Medical – 2020 – Question – 76

Correct Answer – A
Answer: A. Cocaine poisoning
Magnan’s sign or Symptom is a clinical sign in which people with cocaine addiction experience paraesthesia which feels like a constantly moving foreign bodies, (cocaine bugs) such as fine sand or powder, under the skin. It is the most tactile hallucination.
Degeneration of the central nervous system occurs, and the patient may suffer from hallucinations, convulsions, delirium, and insanity.
Magnan’s symptom or cocaine bugs is characteristic, in which there is a feeling as if grains of sand are lying under the skin or some small insects are creeping on the skin giving rise to itching sensation (formication, tactile hallucination) with resultant excoriation, leading to irregular scratches and ulcers.
THE ESSENTIALS OF FORENSIC MEDICINE AND TOXICOLOGY
By Dr. K.S. NARAYAN REDDY 33/e- pg-603