This feeling also is psychologically addictive. Cocaine use also can cause a person to become violent or act erratic or paranoid. They may experience hallucinations, confusion, anxiety, and a loss of interest in basic needs, such as food or sex. Cocaine can cause loss of concentration, irritability, and a loss of memory. It can cause a lack of judgement that may lead to dangerous behaviors, such as unprotected sex, using a dirty needle, driving while under its influence, and violence.
Cocaine is one of the most addictive drugs in common use.
Physically, cocaine causes increased blood pressure and heart rate. In fact, the heart may begin to race until it fails, causing sudden death. Strokes, heart attacks, and respiratory failure also are common reactions. Snorting damages the linings of the nose and upper respiratory tract. A red, runny nose or frequent nose bleeds are an indication of cocaine use.