An indicator is something the patient feels and explains while a clue is something that others like doctor or friends see in the patient. An example of a symptom is a patient reporting sleepiness while a sign would be someone noticing dilated pupils.
Substance dependence is when someone is addicted to a something like drugs or alcohol and they are not able to control their use of the substance. Though these may be dangerous to them, they go ahead with alcohol consumption (the possible dangers may or may not be clear to the person)
Drug addiction makes the body have a strong desire for the substance. 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 condition of the person, their family lineage, the substance in question, and the person involved are some of the factors that determine the possible signs and symptoms of addiction.
These are some of the possible signs and symptoms of alcohol addiction:
Certain alcohol or substance abusers who aren't technically addicted might also be affected by or cause a few of the above-mentioned descriptions, though these abusers don't generally experience the withdrawal symptoms of addicts or the exact same obsession to use the substance.