Actress Melissa Gilbert injured on ‘Dancing with the Stars’

She tweeted her condition last night.

Some support from fans:

Speaking of panic, I have just been informed that Melissa Gilbert has been rushed to the hospital with a concussion.

— Arngrim (@Arngrim) April 10, 2012

Omg I just heard Melissa Gilbert just went into the hospital…does anyone know what happened and if she is okay?!

— a_teen_dancers_mind (@a_teen_dancer) April 10, 2012!/The_Blewz_Man/status/189573166178373633