Days after being cited for driving under the influence, Lindsay Lohan has checked into rehab, her rep confirms.

“Lindsay admitted herself to an intensive medical rehabilitation facility on Memorial Day,” Lohan’s publicist said in a statement Tuesday.

“Because this is a medical matter, it is our hope that the press will appreciate the seriousness of the situation and respect the privacy of Lindsay as well as the other patients receiving treatment at the facility.”

Earlier on Tuesday, a family source told PEOPLE that the recent developments have been hard on Lohan’s family, including mom Dina. “She’s doing the best she can,” says the source.

This is the second time this year that the 20-year-old star has been in a treatment facility. Her first stay, at the Wonderland Center in West Hollywood, started on Jan. 17.

At the time Lohan issued a statement saying: “I have made a proactive decision to take care of my personal health.”

This time, TMZ.com reports that Lohan has entered Promises treatment center in Malibu. The decision to enter a program comes in the wake of Lohan being cited for DUI after a car accident in Los Angeles. On Saturday morning around 5:30 a.m., Lohan crashed her 2005 Mercedes SL-65 convertible into a curb and shrub on Sunset Boulevard. Lohan, who had left the scene by the time police arrived, was hospitalized for minor injuries. Two passengers were not hurt.

Police said in a press conference Saturday afternoon that they recovered a substance tentatively identified as “a usable amount of cocaine” in connection with the accident. However, authorities refused to specify where the drugs were found.