Tag: disorders of nervous system

• Addiction is a psychological and physical inability to stop consuming a chemical, drug, activity, or substance.
• When a person has an addiction, and they stop taking the substance or engaging in the behaviour, they may experience symptoms. These symptoms include anxiety, irritability, tremors and shaking, nausea and vomiting, fatigue and a loss of appetite. 
• Hence, Withdrawal symptoms of drug addiction are Unpleasant symptoms shown due to non-availability of addicted drugs. 
• So, the correct answer is 'Unpleasant symptoms shown due to non-availability of addicted drugs'.

Sometimes, an addict can get a sample of heroin, which is adulterated with a dangerous poison, strychnine. Its injection is known as 'hot shot', which can cause quick death. 'hot shot' can also occur, when an addict, used to injecting heroin 3-5% purity, gets a purer blend of the  drug.
Thus, the correct answer is option (A), 'Injection'.

An average cup of tea contains approximately 20 - 30 mg of caffeine.

Habituation is becoming accustomed to any behaviors or condition, including psychoactive substance use. It is a desire but not a compulsion to continue taking the drug for the sense of improved well-being it engenders. This habituation is the initial stage of drug addiction,
Thus, the correct answer is option (B), 'Habituation'.

Nicotine is the primary addictive agent in cigarettes, chewing tobacco, cigars. Tobacco leads to nicotine dependence.
Thus, the correct answer is option (B), 'Nicotine.

Drug addiction psychological symptoms include:

• Unexplained change in personality or attitude
• Sudden mood swings, irritability, or angry outbursts
• Periods of hyperactivity, agitation or giddiness
• Lack of motivation, appears lethargic
• Appears fearful, anxious, or paranoid with no reason.

Tolerance is the resistance of a person when addicted to a drug and can withstand even in higher doses. Hence, the correct option is D.

Codeine is a moderately strong opiate drug that is used in pain relief and for the suppression of coughs. But strong or weak, it is still an addictive drug with many symptoms of use in common with other opiates. The road to addiction to codeine usually starts with an increasing tolerance to the drug.
Therefore, the correct answer is option B.

Cocaine is a powerful CNS( central nervous system) stimulant, which induces a sense of well-being and pleasure and delays fatigue. It causes lack of sleep, loss of appetite, headache, convulsions, insomnia, respiratory or cardiac failure and may lead to mental disorder.