Hand pain can be caused by disease or injury affecting any of the structures in the hand, including the bones, muscles, joints, tendons, blood vessels, or connective tissues. Hand pain is one feature of joint inflammation (arthritis) that may be felt in the hand.
Marijuana and the Eyes. Marijuana has a few key effects on the eyes. One of the most noticeable occurs shortly after smoking the drug: redness of eyes. THC in marijuana lowers blood pressure which dilates the blood vessels and increases blood flow throughout the body.
Chinking. 1  A side-effect of cannabis use that causes the muscles of one's eyelids to become relaxed and slightly closed to take on the appearance of someone from Asian - or 'chink' - descent. A similar side-effect sometimes called 'red-eye' can also occur if a user is a new smoker or just smokes a lot.