Cocaine dependence (or addiction) may be a psychological want to use hard drug often. Hard drug dose could end in vessel and brain injury like constricting blood vessels within the brain, inflicting strokes and constricting arteries within the heart, inflicting heart attacks specifically within the central system. The employment of hard drug creates high spirits and high amounts of energy very like caffeine. If taken in giant unsafe doses, its attainable to cause mood swings, paranoia, insomnia, psychosis, high vital sign, arrhythmia, panic attacks, psychological feature impairments and forceful changes in temperament. The symptoms of hard drug withdrawal (also called humiliation or crash) vary from moderate to severe: depression, depression, anxiety, psychological and physical weakness, pain and compulsive desire. Traditionally, the addiction was called cocainism. Hard drug may be a powerful stimulant renowned to form users feel energetic, happy, talkative, etc. In time, negative facet effects embrace raised vital sign, irregular or fast pulse rate, high vital sign, raised risk of heart attacks, strokes and even overtime from a systole. Several habitual abusers develop a transient manic-like condition like stimulant drug mental disease and dementia praecox, whose symptoms embrace aggression, severe psychosis, and tactile hallucinations together with the sensation of insects below the skin (formication), additionally called "coke bugs", throughout binges. Once taking hard drug on an everyday basis, some users can become strung-out. once the drug is out of print forthwith, the user can expertise what has come back to be called a "crash" alongside variety of different hard drug withdrawal symptoms, together with psychosis, depression, exhaustion, anxiety, itching, mood swings, irritability, fatigue, insomnia, an intense longing for additional hard drug, and in some cases nausea and vomit. Some hard drug users additionally report having similar symptoms to dementia praecox patients and feel that their mind is lost. Some users additionally report formication: a sense of a locomotion sensation on the skin additionally called "coke bugs". These symptoms will last for weeks or, in some cases, months.