I was diagnosed with ankylosing spondylitis which causes inflamation in the joints of the spine because of this I suffered extreme chronic fatigue. To fight the fatigue i used methamphetamine which was very effective of course. I went a little overboard with my meth use and thought i would get some sort of rehab treatment.The rehab doctor prescribed me modafinil to lessen the meth witdrawl symptoms. Modadinil turned me into an impulsive gambler instantly. I do normally gamble a little ,maybe once a week I spend 20 to 50 dollars on poker machines, but with modafinil I lost about 5000 dollars within a matter of 5 hours , i simply could not stop myself from gambling , i became extremely impulsive.