Hello. Welcome to ask the doctor.
If there is an itch, antihistaminics like Levocetirizine are advised for symptomatic relief.
Bathing in the tub or taking shower doesn't make any difference on itch.
For shingles, antiviRals like Acyclovir is advised.
Visit your Doctor so that he can examine you and give you a prescription accordingly.
You can share my opinion with him.
I hope it helps.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.