Remedies for shingles rash includes the use of calamine lotion and moist, cool compresses. Other remedies include applying cornstarch or baking soda to the rash, as stated by WebMD.
Certain medications such as Zovirax and Valtrex can reduce the severity of symptoms if administered in the earliest stages. In severe cases, a doctor can prescribe prescription topical creams to ease symptoms or pain medications containing codeine. In general, shingles can last anywhere between two and six weeks, but severe cases can last longer, according to Mayo Clinic. It is common to only get shingles once, but in rare cases, a person can experience it two or three times.