When a loved one is addicted to drugs, there are several signs to look out for. Most of the time, when a person is into addiction, they tend to leave and portray a lot of clear signs which point to the type of drugs which they use.
You could check for some physical signs such as drug paraphernalia like syringes, baggies, bongs, balloons, burned spoons and pipes. They may also show a lot of symptoms through the way they act such as isolating, injection marks, changes in physical appearance, itching or bloodshot or dilated pupils and lying.