Bret Michaels rushed to ICU with brain hemorrhage

Bret Michaels's health has taken a turn for the worse, PEOPLE has learned: After an excruciating headache late Thursday night, the star was rushed to an undisclosed hospital where doctors discovered he suffered a massive subarachnoid hemorrhage (bleeding at the base of his brain stem), according to a source close to the situation. http://bit.ly/cggleL