06/27/2008 AT 09:45 PM EDT
Expanding upon an earlier explanation that foot-surgery recuperation forced him into rehab
, Aerosmith rocker Steven Tyler now says he required the "safe environment" of a treatment facility in order to address a dependency on pain and sleep medication.
"To have your feet done, to have your leg done, you have to be on narcotics," Tyler, 60, told the Associated Press on Friday. "You have to be on sleep aids at night. I don't know about Joe [Perry, an Aerosmith bandmate], but I was off and running and I didn't like the me that was me."
Tyler – who successfully went through rehab in 1986 after years of admitted drug and alcohol abuse – issued a statement
in May, saying he'd gone into rehab that month to recover from foot surgeries to repair problems caused by his highly physical stage moves.
"This was a month ago," he said Friday, "so I just put the brakes on and checked into detox and just pulled the plug on all of it."
– Stephen M. Silverman