Here are few warning signs which can be used addiction symptoms,
Physical:
* Fatigue
* Red and gazed eyes
* Dilated pupils
* Poor eating and sleeping habits
* Appears dull and sleepy
* Repeated health complaints

Emotional:
* Sudden mood changes
* Irritability
* Irresponsible behaviour
* Poor judgment
* General lack of interest
* Withdrawing from family
* Secretiveness
* Sudden disregard for physical appearance
* Requests for money that [...]