From the symptoms initially as it was a red skin rash, so it most likely is due to eczema. Yeast infection presents with red rash which is very itchy. Another possibility can be diaper rash which can occur due to contact dermatitis to the material of the diaper and urinating and sweating makes it worse. Use cotton diapers for some days and expose her to the air for some time after urinating and washing. Now since she is getting painful sores, so it looks like infected hair follicles and again not yeast infection. My sincere advice would be to consult a dermatologist and get a biopsy skin and KOH examination and fungal culture of the skin scrapings done before trying out any medicine. Biopsy will help us in confirming the diagnosis and specific treatment can be prescribed rather than hit and trial of various medicines in such a young child.
I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
Thank you for input. I am hoping to get into the dermatologist soon. I will talk to her about the biopsy. I know that about a year ago they did do a scrap and it was fungal. But since then the abscesses are really getting worse and becoming more of a problem then the yeast infection which never goes away but is more controlled then it was. We will try the cloth diapers, and the airing out after bath and potties. I have gotten some information from other sources about diet as well do you think that changing her diet could also help?
If the diagnosis is confirmed to be eczema then a relation to the diet can be thought of. Fungal infections do not have any relationship in particular with change in diet. Eczema is a form of chronic dermatitis (rash).Allergic reaction is one of the important causes of eczema. Allergic reaction can occur to strong soaps, Solvents, chemicals, certain foods, food additives, plants, metals, cosmetics, even urine and faeces of some animals (dust mites).
I hope it helps. Take care and regards.