A sign is something others, like the doctor, see, whilst a symptom is something that the patient discerns and explains. For instance, drowsiness might be a symptom while dilated pupils might be a sign.
Drug addiction - when an individual is dependent on a substance, like a drug, nicotine or alcohol, he/she is unable to manage his/her use of that substance. Even if the substance poses a danger, they will still take it whether or not they know the dangers.
Substance reliance can bring about effective yearnings. It's possible that the addict wants to stop taking the substance but finds it really hard to do so on his or her own.
The signs and symptoms of substance reliance change as indicated by the individual, the substance they are dependent on, their family history (hereditary qualities) and individual conditions.
Some signs and symptoms of abuse could be:
Those who are addicted to alcohol and drugs on a technical manner may be exposed to the aforementioned dangers, but the severe urge to consume drugs and the withdrawal symptoms witnessed by an addict may not be present.