A benign skin rash characterised by red patches that usually start on the chest, back and/or abdomen, and which can spread to the rest of the body. Although it can affect people of any age, it is most common in older children and young adults.
The cause is unknown, but it is believed to be viral in origin. It cannot be passed between people.
Initially, the symptoms are similar to those of the common cold, including headache, fever, sore throat and/or nasal congestion. This is followed by large, squamous, round skin lesions that spread over the body in the form of smaller lesions within a few days. These lesions are usually associated with severe itchiness.
A diagnosis is made through clinical history and physical examination. If the diagnosis is unclear, blood tests and biopsies can be performed.
Treatment focuses on relieving itching with antihistamines and/or lotions. Home remedies, such as warm baths, may also help to reduce itching. Phototherapy can speed up the disappearance of skin lesions. Finally, antivirals are used in cases where there is a clear link to a viral infection.
You should see a specialist if you have any of these symptoms or if they do not go away after 12 weeks.
- J. M Moragas. Manifestaciones cutáneas de las enfermedades internas. Interpretación de las alteraciones en la piel. Farreras Rozman. Medicina Interna. Volumen I. Duodécima edición. 707:719.
- T. J. Lwley, K.B. Yancey. Trastornos de la piel. Valoración del paciente con trastornos cutáneos. Harrison. Principios de Medicina Interna. Volumen I. Decimonovena edición. 339:352.
- I. López, C. Durán, M.M. Sáez, L. Orozco, C. Palacios, R. Ruiz. Pitiriasis rosada: un exantema que debe ser reconocido por el médico de primer contacto. Estudio de 30 casos. Acta Pediátr Mex 2014;35:289-294.
- UpToDate [Internet]. Waltham. 2017. Pityriasis rosea; [citado el 20 de julio de 2017]. Disponible en: http://www.uptodate.com/contents/pityriasis-rosea?source=search_result&search=pitiriasis+rosada&selectedTitle=1~1
