This is Dr. David
a painful rash on the rib cage sounds like shingles which comes from the chicken pox virus you get when you are a child
and can come out when you are ill or sick and your immune system is suppressed.
you need to see a doctor to get on a course of acyclovir pills and acyclovir creams to help this shingles viral outbreak rash to heal up faster.
the acyclovir can help your herpes outbreak to heal up as well.
the herpes virus most likely was in your body for years as well and only comes out when your immune system is weak and you are sick or really run down.
let me know if you have other questions.
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