What products are best for a severe rash?

This type of rash is normally known as intertrigo. Here's a link with lots of info:

https://my.clevelandclinic.org/health/diseases/21693-intertrigo

Call moms PCP to see what recommendations s/he has.

Good luck.

Monistat is my favorite. A white cream. MOST of these rashes are fungal due to moisture, etc. and they are common as anything if antibiotics are involved. The rash may become a bit more red, a bit more inflamed for a day, but after that it should quickly go away. If it does not then you could be dealing with something else and it's time to check in with the doc.

Don't put on anything with an oily barrier. This holds it all in and encourages it.
Good luck.
Do update us please.
Monistat is over the counter in the feminine supplies.

Make sure when she is bathed that she is completely dry in that area. Even if you have to use a hairdryer on low. No powder.

Your mother needs to be examined by a dermatologist and a gynecologist for her rashes as her problem might be something more serious and over-the-counter cream might not cure her rashes.

It might be best to have her see a dermatologist and get a prescription medication for it. She's entitled to one preventative full-body check each year with Medicare.

Soldier4Christ: Pose your question to your mother's dermatologist.

Please have her evaluated by a doctor. She may have a yeast infection, but she may have other issues as well.

In the meantime, wash skin with mild soap. Make sure to rinse skin thoroughly and dry gently. Help her to get more air to circulate in the areas by placing washcloths or small towels between skin folds so those areas can air out. Creams that have a lot of oils in them will generally not help the problem - unless it is a diaper rash from being wet and exposed to urine OR a yeast infection. That's why I suggest a doctor appointment.

If the OTC products don’t work, ask her doc for Nystatin powder or crème. Watch out for sugar in her diet. Yeast feeds off sugar.

Gold Bond powder will help keep her dry and may be all that’s needed.

Weight does make it worse but clothing that doesn’t breath will increase moisture. Hygiene is also important.

My personal experience was “No sugar=no rashes”.

When I weighed 265 my skin was rarely dry, even when I was cold.

I now weigh 138, and haven’t had a rash under my stomach flap or breasts in over 10 years.

If she’s a sweet eater, or even a heavy eater of starches (potatoes, breads, cookies…), the solution will be more elusive.

I’d get input from her physician.

Keeping the area as clean and dry as possible.
Any cream or lotion you put on should be with a light touch. The more you put on the more difficult it is to remove. I use to pat barrier cream on my Husband. I would mix an A and D type ointment with a zinc base ointment.
Hospice did order Nystatin for a rash he had.
Seeing a doctor to determine the cause of the rash might help.
If it is a yeast something like Monistat might help.