Danny Bonaduce has been dealing with a mysterious illness for over a year. The illness has left him uneasy on his feet, and doctors didn’t know what was wrong with him.

However, in March, a doctor finally figured it out. According to TMZ, he has hydrocephalus, a neurological disorder caused by a buildup of liquid in the brain. So on Monday, he is going into the operating room, where they will put a stent in his head and drain the fluid.

It might not fix everything, but The Partridge Family star is hoping it will make things better. And we are hoping the same for him.