In most cases paranoia is different than hallucinations...this is not to say that paranoia cannot escalate to hallucinations. I dont think weed is listed as a hallucinogen though. someone here mentioned COPD, that is a real problem and is due to smoking...smoking anything so when we deny these things is indicative of some type of love affair...which in and of itself is indicative of a problem. Also, if you are prone to panic attacks may not want to hit the weed. Well then there is the olod adage 'if yer gonna do sometin...' and there i can agree. I dont do substances myself though I have done University level studies on same.