90 year old mom has pressure sores from bed pan. Is this normal?

I answered you under a different question regarding this issue you had, but just in case you didn't read that one, I will answer under this one. On the other link you stated that the bedsore was on her tailbone. While very unlikely caused from being on a bedpan(unless left on for hours at a time), it could very likely be a Kennedy ulcer, which can often be fatal. The tailbone is the most common place for these ulcers to form, though they can appear on other parts of the body as well. I would certainly ask her Hospice nurse what she/he thinks, as they should be well versed in these types of ulcers. Best wishes.

They used a bed pan for my husband during one of his hospital stays, and he got bruises on his skin from it. He also gets sores easily from diapers. So, we avoid both the bed pan and diapers! I just keep him in the blue pad in bed and roll him over and clean him up, placing a new pad down when he needs it. The hospital does this, too, even without me asking for it. I would not recommend a bed pan for anyone after a certain stage of life.

good luck.

https://www.mayoclinic.org/diseases-conditions/bed-sores/symptoms-causes/syc-20355893

Mayo's is as good as any for what a pressure sore is and about healing. It basically starts due to a body with poor circulation, and the wound progresses to tissue death; in a thin person it can quickly move to necrotic tissue with exposure of bone below. Notoriously difficult to heal because mostly attacks those who are very debilitated with deficits in circulation, nutrition, mobility, age changes to skin, already.
You mention that they are photographing it; all LTC facilities are mandated to report pressure sores. They are often deadly. Too many pressure sores at any facility is indicative of not enough care in turning, in getting preventative mattresses for those who are bed bound. However, no matter the care, at some point in one who is unable to move about, pressure sores will begin to happen.
Christopher Reeves, who played Superman, was injured in fall from his horse and spent years paralyzed and advocating for the disabled did eventually die from a pressure sore. They can easily go systemic, as cellulitis or any other circulatory-involved open wounds can.
I am so sorry that there is yet another level of suffering, and I am so relieved Hospice is there for your LO.

I doubt it is from the bed pan unless they are leaving her on it for hours. Pressure sores from any cause (at least those beyond stage one) are not normal in a properly run facility, where I live they are considered a red flag for improper care and a sign of abuse. What is the facility telling you they will do to treat and prevent? Has anyone suggested an alternating pressure mattress, and is a wound care specialist giving treatment?