"Lindsay was treated and released, and is doing fine," her spokesman, Steve Honig, told Newsday. She received antibiotics and other medication for the lung infection, said TMZ.com, which first reported the incident, and was discharged from the hospital.
Disputing details in the TMZ account, Honig confirmed, "It was asthma." TMZ reported that the "Mean Girls" star had been telling friends during the past several days she believed she had contracted walking pneumonia.
The actress, who has completed filming the Elizabeth Taylor role in the upcoming Lifetime TV-movie "Liz & Dick," has not commented on her Twitter page.