Remember all those late night tweet rants? The times she would go nuts on Sam Ronson in front of the paps, the reckless driving? Well Lindsay Lohan's erratic behavior has finally been explained and it appears Adderall is to blame.
As we previously reported, UCLA rehab facility believe Lilo has misdiagnosed with Attention Deficit Hyperactivity Disorder ... and then prescribed Adderall to treat the phantom affliction.
And now Dr. Joe Haraszti, a prominent L.A. addiction specialist, tells TMZ that all those times Lindsay was acting a fool was because she was strung out on Adderall. "It can experience similar effects as people who use cocaine or methamphetamine."
According to Dr. Haraszti, people who "unnecessarily take Adderall can display manic symptoms and often do things like driving around until all hours of the morning ... smoking heavily ... tweeting ... and texting all night long." The doc adds, "They can become very impulsive."
The doc also notes that people in that situation "might then complain of insomnia and then take Ambien or other sleep aids to help fall asleep ... it's a vicious cycle"
Dr. Marc Kern, another addiction expert, tells TMZ, "The Adderall counteracts the sedative side effects of alcohol use … making these people often drink more than someone who does not take the drug."
Of course Lindsay can't blame everything on the Adderall and has to take some responsibility for her actions, but we're willing to bet Dina Lohan is going to talk to the press soon about how ALL of Lindsay's problems were the result of her being misdiagnosed. Lindsay will reportedly leave rehab as early as next week so we’ll see if jail and rehab did her any good.