Risks
Drug addiction may also follow the use of drugs for physical pain relief, though this is rare in people without a previous history of addiction. The exact reason of drug abuse and dependence is not yet known. The genetic make-up of the individuals, peer pressure, emotional distress, anxiety, depression, and environmental stress are all factors which seem to be involved. Children who grow up in an environment of illicit drug use may first see their elders using drugs. This may put them at a higher risk for developing an addiction later in life for both environmental and genetic reasons.
withdrawal
Drug withdrawal symptoms can occur when use of a substance is stopped. Withdrawal symptoms vary, depending on the particular substance. The withdrawal symptom depends on the length of time the drug was being used. Drug intoxication, overdose, and withdrawal can be life-threatening in some situations.