Most specific feature of hanging is
Tardieu spots: They are also seen in natural deaths from bacterial endocarditis, hemophilia, purpo, coronary thrombosis, spticemia, etc. and poisoning with aconite, barbiturates, organophosphates, CO etc. Ref: FORENSIC MEDICINE AND TOXICOLOGY Dr PC IGNATIUS THIRD EDITION PAGE NO 235
Tardieu spots
Ligature marks
Fracture of hyoid
Dribbling of saliva
Asphyxia