bunny hair loss

i have a friend who has a female netherland dwarf bunny we are unsure on her age as she was a rescue bun, and for the last 8 days non stop she has been losing hair from her lower half of her body she is still eating the same amount as she usually would and drinking,urinating and pooing as usual her personality has not changed does anyone have any advice or help she is being taken to the vet this afternoon anyone have any ideas??? vibes please???

When you say loosing hair is it that she has bald patches or that the fur has been found laying about the hutch?

Has she been speyed?