I think what happen to your glider is totally different than what is happening to Krystan's glider.
Were the bald spots on your gliders head right above the eyes? If so this is usually caused by over grooming sometimes by stress or change in diet. The stress can be from changing room, changing cages, taking on a vacation, getting a new pet, other major things like that. The over grooming can also be caused from bordom. Being in her cage more than usual.