Physical (Physiological)Addiction

Being physically addicted means a person's body actually becomes dependent on a particular substance (even smoking is physically addictive). It also means building tolerance to that substance, so that a person needs a larger dose than ever before to get the same effects. Someone who is physically addicted and stops using a substance like drugs, alcohol, or cigarettes may experience withdrawal symptoms. Common symptoms of withdrawal are diarrhea, shaking, and generally feeling awful.