MacEwen's sign is seen in:
MacEwen signs (MacEwen pupil) The pupil of a patient comatose from alcohol intoxication dilates briefly when the patient is stimulated but not awakened, while that of a patient comatose from structural disease does not get dilated for mild stimulation. Ref: Principles of forensic medicine, Apurva nandy, 3rd Edition,Page 847.
Lead poisoning
Arsenic poisoning
Ethanol poisoning
Copper poisoning