There are few studies on the risks and benefits of marijuana use to treat chronic pain in adults, and even less data on the pros and cons of using it to ease chronic pain in adolescents, the researchers say. They recommend that physicians screen teen chronic pain patients for marijuana use. While medical marijuana may help some specific conditions, its adverse effects, even with short-term use, can include fatigue, impaired concentration and slower reaction times, they say.
"The consequences may be very, very severe, particularly for adolescents who may get rid of their pain -- or not -- at the expense of the rest of their life," says co-author J. Michael Bostwick, M.D., a Mayo Clinic psychiatrist.
The researchers describe the cases of three high school-age patients at Mayo Clinic's pediatric chronic pain clinic who said they used marijuana regularly. Pain worsened for all three despite their marijuana use. None attended school full time; they reported impaired functioning and difficulty becoming more socially active.
Excessive doses of marijuana may induce symptoms that many chronic pain patients already experience, including dizziness, anxiety, sedation, fatigue, decreased reflexes, confusion, difficulty concentrating and a lack of motivation, the researchers note. Marijuana use before age 16 has been linked to earlier development of psychosis in susceptible patients; smoking marijuana more than once a week has been connected to persistent cognitive damage in adolescents, the authors say. An estimated 1 in 10 marijuana users becomes addicted, and people under 25 are more susceptible to that, Dr. Bostwick says.
http://sciencedaily..../130617090940.htm
I know, I know, the Mayo Clinic is full of shit because you know people who used it and are happy, well adjusted folks.