She also began making periodic visits to hospitals in 2005, being treated at least once that year for exhaustion. She was hospitalized at least twice in 2006, the first time in London for a cut on her leg and the second time in the Miami area for an asthma attack.

Not everyone believed all of her physical problems were health related — Lohan, who didn't turn 21 until this month, has long been a fixture on the Hollywood nightclub scene.

"We are well aware that your ongoing all-night heavy partying is the real reason for your so-called 'exhaustion,'" James G. Robinson, head of Morgan Creek Productions, said in a letter last year chastising the actress for showing up late, if at all, to the set of the film "Georgia Rule."

Her father, former futures trader Michael Lohan, has had his own problems with the law. He was released from prison in March after serving nearly two years for attempted assault and driving while intoxicated.

Despite her problems, Lohan has continued to work frequently until now, both as an actress and singer with several albums to her credit.

"Lohan rises to the occasion, delivering a rock-the-house version of 'Frankie and Johnny,'" Rolling Stone critic Peter Travers said of her singing in "A Prairie Home Companion."

Whether her latest run-in with the law will hurt her career remains to be seen, said veteran publicist David Brokaw, although he noted both fans and Hollywood moguls tend to be forgiving of celebrities if they clean up their acts.

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