### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
My 6 yr old son starting itching around his private area so I started A & D ointment. I looked behind his ears and saw that his skin looked a litttle irritated and applied it there as well. After about a week, I called his dr because they both seemed to not clear or dry up. She prescribed him nystatin, she said that it might be a yeast infection. Its been a week or more now and it is worse. It seems as if it has spread a lot in both areas. Is it the Nystatin thats making it worse, should I ask her to prescribe another product, or is it a simple fix that I am overlooking? Please help me. Also, not sure if this can help the answer but she had to do a blood culture on him and she said she has to retest because his white blood cell count is really low. She said his iron is a little low as well and he has a sickle cell trait.

### output:

Hello and welcome, This sounds like a frustrating situation.  The first thing that I thought of when reading your question is that your son needs to be seen in the doctor's office to truly evaluate that rash.  While it is quite reasonable to have a medication such as statin prescribed over the phone, given the failure of it to clear up the rash, and that it is getting worse, and that you've tried for a week - it is time to take him in so the doctor can look at it and see what that rash truly is. Regarding whether Statin can make a rash worse (or cause one): the worsening of the rash may either be due to that statin is not the right medication to treat this rash, OR that your son is sensitive or allergic to it. At this visit the doctor can explain the significance of his low white blood count and whether this might be related to the persistence or worsening of his rash.  She will be able to tell what specific cell types of the white blood count are low. I hope this helps you.  Best wishes to you and your son.