Danny Bonaduce to undergo brain surgery for neurological disorder.

Danny Bonaduce, star of "The Partridge Family," is set to undergo brain surgery after being diagnosed with hydrocephalus, a neurological disorder caused by an abnormal buildup of cerebrospinal fluid in the brain. Bonaduce has spent a year battling an illness that has left him unable to walk and has seen over 100 doctors. The surgery will involve the insertion of a drain port in the back of his head to get rid of excess fluid. Bonaduce hopes the surgery will immediately improve his condition.