Drugs can make you sleepy, lethargic and have slurred speech or it can make you angry and do horrible things that you don't even remember, or it can make you keep sniffing like through your nose if that is where you injected it, it makes you wear long sleeves and cover your legs even when it's hot cause you don't want anyone to know that you've been injecting yourself with drugs. it makes you steal money, it makes you change your whole attitude and you only are interested in people who do drugs like yourself, you also can be hyper and laugh alot, disrespectful, and have no control. Your eyes look drugged out as well.
Really depends on the drug. Change of behavior as bspain said, sudden loss or increase in appetite/weight, drowsiness or constant hyperactivity, glazed eyes for drugs such as pot, bloodshot eyes, easy bruising for some intensive illness meds, headaches, inability to focus, or there could be no signs at all.
Depends on the drug, codiene is nothing to be concerned about, just people seeming drunk. MDMA would make them depressed/mopey for a few days Meth would slowly remove any emotions from their body. Crack/coke would make them really really happy and then really really poor.
Feeling that you have to use the drug regularly — this can be daily or even several times a day Failing in your attempts to stop using the drug Making certain that you maintain a supply of the drug Spending money on the drug, even though you can't afford it Doing things to obtain the drug that you normally wouldn't do, such as stealing Feeling that you need the drug to deal with your problems Driving or doing other risky activities when you're under the influence of the drug Focusing more and more time and energy on getting and using the drug (This is what I found.. Hope it helps!)
Uppers curb your hunger which explains why crack harlots are wicked skinny. Weed gives you the munchies and exacerbates lackadaisical behaviors. Some say it's a gateway for other drugs. When's the last time a weed junkie knocked over a liquor store for a half an o. "It's not complicated. "