@RISEMAN_2021 You can also buy calamine lotion and need strong pain medication as it is excruciatingly painful.
Please go to your doctor or local clinic and they'll advise you further
@RISEMAN_2021 This is Herpes zoster( Shingles ) .It is casued by a varicella virus . It is the same virus that causes chicken pox. You probably had chicken pox as a child and now it is the reactivation of that virus that remained dormant.
You need a course of Acyclovir 800 mg 4hly 7/7