I'm a caregiver for a woman who has this disease. Everything (which isn't much), is negative. Does anyone care for a person with psp and can give me some pointers on helping her through this. I went to the library and there was 1, 2 page section on this disease. She cannot walk on her own due to poor balance. Dhe tends to fall backwards. The article i trad said something about a weighted walking aid. Does anyone know what this is?