Long-time gay rights activist David Mixner has been hospitalized, according to a post on his blog at DavidMixner.com.

The post, dated August 1, says: “Unfortunately, Mr. Mixner is sick and in the hospital. He will not be able to write his blog and is looking forward to being back and sassy in a week or so. He thanks you for your patience and kind wishes while he recovers.”

Mixner, who will celebrate his 63rd birthday in two weeks, is best known for his public falling out with President Bill Clinton. Motivated by candidate Clinton's pledge to end gay and lesbian discrimination in the military, Mixner raised millions for Clinton's presidential bid, but the pair parted ways when President Clinton proposed “don't ask, don't tell,” the law that prohibits openly gay service in the military.

San Francisco-based gay rights activist Michael Petrelis wrote on his blog: “Be a good patient, listen to your doctor and the nurses, and get well soon.”

Recently, Mixner announced he would not be able to attend the October 11 planned gay rights march on Washington due to a conflicting commitment in Africa.