Pityriasis Rosea Symptoms, Causes, Diagnosis Treatment. How long does pityriasis rosea last Pityriasis rosea usually lasts 1 to 3 months and usually never comes back. Let your doctor know if the rash or itching lasts longer than 3 months. How is pityriasis rosea treated The rash usually goes away on its own. No treatment can cure it, but medicine can help relieve the itching. Your doctor might suggest antihistamine pills one brand name Benadryl, a steroid cream, calamine lotion or zinc oxide cream to relieve the itching. I have had a severe rash for over 2 months now. Torrent Dragon Medical Practice Edition 2 more. I have been to 2 dermatologists, an allergist and my pcp. Blambot Custom Free Font on this page. No luck. I am miserable and this is affecting my daily life. Pityriasis rosea is a fairly common skin condition causing red raised scaly patches on the skin across the body. Page 2 of 3 British Association of Dermatologists www. Registered Charity No. Herald Patch Pityriasis' title='Herald Patch Pityriasis' />Pityriasis Rosea a. Initially a single large herald patch, then a generalized rash 1 2 weeks later, lasting 2 6 weeks Selflimited, possibly viral, benign lesion of children and. Belajar Bahasa Korea Untuk Pemula Pdf Printer more. Sometimes people who have pityriasis rosea have to take steroid pills to clear up their rash.