28 May 2021

Pityriasis rosea and pityriasis versicolor

Clinical Dermatology

Dr David Lim and Professor Rodney Sinclair discuss the finer points of diagnosis.


  • Pityriasis Rosea is a self-limiting, post-viral rash; an important differential diagnosis is guttate psoriasis
  • Itch associated with Pityriasis Rosea is variable. If the rash or itch is distressing, it will respond to narrowband UV therapy
  • Pityriasis Versicolor comes as a winter or summer rash
  • Winter hyperpigmented lesions of Pityriasis Versicolor respond to oral Diflucan for a short course then monthly to prevent recurrences
  • Summer hypopigmented lesions of Pityriasis Versicolor will need UV exposure for pigmentation to be restored, either in sunlight or by narrowband UVB therapy

Host: Dr David Lim, GP and medical educator

Expert: Professor Rodney Sinclair, professor of dermatology, University of Melbourne; Founder and director of Sinclair Dermatology; Director of dermatology, Epworth Hospital; Head of the Epworth Dermatology Research Centre

Total time: 16 mins

Recommended Resources:

COVID-19 live update