Substance abuse can’t happen suddenly and if it is once you went out of limit mainly in case of alcohol consumption, you will never be referred as an alcoholic. You have tasted heroin or cocaine or in a friend's company you had it once or twice during the university days. This does not in any way represent that you are a drug addict. Then what are the probable symptoms to indicate that you have turned into an addict?
Try to trace the mood first
Withdrawal symptom - do you get what it means? It is actually related to your mood. If you find someone near you always with a tendency to fluctuate and get depressed as if the mood swings between the two ends very often you can predict that the gentleman is a patient of addiction. He might be involved into drug abuse or can be a drunk.
Anxiety to unnecessary issues and getting violent over minute things is another symptom that the person is suffering from some sort of withdrawal problem. Such people have a general tendency to take refuge in any type of drug addiction.
Find out how the person behaves in the social occasions. This will help you to judge if the person is trying to remain in isolation and stays alone even in the noisy and party environment. This clearly indicated that the person is being forced to be here and he is just trying to bear with the situation. Read his body gestures and you can make out whether he is a drug addict. He might even tend to behave erratically.
The normal health conditions will start deteriorating. The drugs have very adverse effects on the entire metabolism of the body. Even alcohol damages the liver, spleen and affects the function of the heart and the digestive system. The gradual ill effects on the health reflect through the face. Weight loss and appetite loss severely take place when illicit drugs start getting into your metabolic system.
There are many who even get feats out of drug addiction. Hence if you have someone near you carrying these symptoms and yet not being given the right treatment, it becomes your responsibility to take him to the rehabilitation center and arrange for the further treatment. No one should ignore it since it is a social cause.