What are the physical signs of abuse or addiction?

[bum1esh]

Can anyone help me in this

 

[idlewild]

Abuse can look a lot different than addiction and it also depends on the drug. Physical signs of addiction would be withdrawals when not using regularly and maybe a rising tolerance. For abuse it would be obvious while actively using.

 

[Paracelsus]

What substance or group of substances does your question concern?