My 5.5 month old has had diarrhea for the past 3 days and has become very raw on his bottom from it. I have been putting aveeno diaper rash and a&d with zinc/aloe and cornstarch and nothing is helping, his butt is so sore he screams and stiffens when I change him and it takes his breath away. I took him to the doctor and she gave me yeast meds, but their not helping either. I don’t know what else to do! I’m not using baby wipes just warm water and cloth. I’m giving him plenty of diaper free time and I also change him as soon as it comes out. Please help, if you know anything that will work.

I am a finance major with a test on it. I have to use this formula that says
P = Ke^rt N(-d2) – Se ^yT N(-d1)
What is this?
S= Stock price
y= stock dividend yield
k= strike price
r= risk free rate
T= time remaining until expiration
Anyone that can explain this to me, i wuold be so gratefull

We even took him to a dermatologist and had no luck with the expensive creams. We have used soapless soap. Perfume free wipes, and all kinds of vasoline, cortizone, etc. It’s real splotchy and red. Can anyone give me some home remedies or something that might work?