You are a MOm and you have a feeling you are probably right. Get him help NOW. YOu care enough to be worried, do not let him become a statistic. Sit him down, and start there. Good luck.

The signs I’ve seen (but aren’t neccessarily all-inclusive and may not apply to all people) are: weight loss, teeth turn brown, sudden loss of responsibility or interest in things that were previously meaningful, obsessive compulsive behavior, and erratic mood swings. And, depending on his resourses, he might quickly fall into serious money-related problems. Katiechand’s answer is right on.

you might be able to get a kit at the drug store and test his hair for meth