The pretty "Mean Girls" red head, admitted to a hospital with severe exhaustion and who spent a week recovering, now appears to be affected once again.
Lohan, who is in the middle of a family feud as her mother Dina and father Michael fight a bitter divorce battle, was given sinus and chest X-rays due to a bout of bronchitis on the sets of her new movie "Just My Luck", where the busy actress has been putting in 17-hour days.
The 18-year-old star's publicist confirms: "Lindsay has been under the weather."