Pityriasis rosea is a common, inflammatory skin rash that produces small, scaling patches on the trunk, upper arms and legs. Itching is usually mild but can sometimes be severe. The condition is thought to be caused by a virus and occurs in both children and adults, according to MedlinePlus.com. Pityriasis rosea will go away without treatment, usually within 4 to 8 weeks. However, if the rash is particularly bothersome or itchy, treatment may be warranted.
Corticosteroids
Steroid creams or ointments can reduce the redness, inflammation and itching of pityriasis rosea. The preparations found in stores are usually adequate, or a doctor can prescribe a stronger topical steroid if deemed necessary. For severe itching, oral steroid medications such as prednisone may be prescribed.
Antiviral Medication
Pityriasis is associated with herpes viruses 6 and 7. A paper by F. Drago, M.D., and A. Rebora, M.D., entitled "Treatments for Pityriasis Rosea", describes the effectiveness of the antiviral medication acyclovir in 87 patients. The rash resolved in 79 percent of those receiving the drug, and only 4 percent of those who received a placebo.
Antihistamines
Either topical or oral antihistamines can be used to reduce inflammation and itching.
Creams
Lubricating creams and lotions can help relieve the dryness and itching of the condition. Zinc oxide and anti-itch creams may also be used, according to MayoClinic.com.
Light Therapy
Phototherapy with either natural or artificial light may speed healing of the rash, reports Merck Manuals Medical Library.
Home Remedies
Oatmeal is soothing to the skin when taken as a bath soak. Care should be taken to use only cool or lukewarm water when bathing, as hot water can be too drying to the skin. Strenuous exercise can make the itching of pityriasis worse and should be avoided.
