Lindsay Lohan has walking pneumonia?

Lindsay Lohan "freaked out" and refused to film scenes in Scary Movie 5. The 26-year-old actress - who has battled drink and drug problems in the past - allegedly tried to avoid a scene ridiculing her troubles, so she missed her flight to the set in Atlanta on Sunday and went to a hospital claiming to be suffering from "walking pneumonia".

A Hollywood insider told the New York Post newspaper: "Lindsay missed every meeting she had for the film, including script reads and wardrobe meetings.

"Then she missed her flight to Atlanta on Sunday to shoot the movie. She is under contract - so to get out of it, she had to prove that she was sick. She said she has walking pneumonia."

Lindsay is thought to be particularly concerned about the horror spoof's script - which features a kiss with co-star Charlie Sheen - because of how much it pokes fun at her.

A source added: "It went pretty hard at Lindsay. She'd been freaking out about it for weeks." Another insider told the publication: "She's been locked up in her room at the Bowery Hotel. She's been in a tailspin. Even Charlie Sheen was worried that she might not be able to do the scene."

A representative for Lindsay explained, "These stories are untrue, and she is willingly fulfilling all of her obligations."