Hello,
If the itching correlates with the blisters, it may be from healing, like scabbed areas can itch on other parts of the body when they are healing.
If it started with applying creams to the area, it may be an
allergic reaction to those. If these things are not the case, it may be a yeast overgrowth. You can try soaking in a tub with apple cider vinegar.
If the area is raw, the vinegar may burn so adjust how much you use, but generally the recommendation is 1 cup of apple cider vinegar to a tub of water.
You can also put it, diluted, on a wash cloth and gently press it against the affected areas. Have you gone in to see your doctor yet? He/she can have a look to try to sort out what is going on.
Hope I have answered your query. Let me know if I can assist you further.
Take care
Regards,
Dr Bonnie Berger-Durnbaugh, General & Family Physician