Pityriasis Rosea

Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to Pityriasis Rosea: pityriasis versicolor
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Pityriasis Rosea


in humans, an acute dermatosis believed to be of a viral nature. It is observed principally in middle-aged individuals and occurs most often in spring or autumn. The disease is usually preceded by overchilling and a cold. Pityriasis rosea is characterized by the appearance on the trunk and, less frequently, on the extremities of small, yellowish pink, rounded or oval spots, measuring 1.5–2 cm across.

The numerous skin eruptions are usually preceded by the appearance of a single spot, called the herald patch, that is distinguished by its large size. An eruption protrudes over the surrounding skin. Its periphery is characterized by a bright pink ridge, and its central part is slightly depressed and covered with tiny scales that have a parched and wrinkled appearance. The surface of some eruptions is covered with fine furfuraceous desquamation. Slight itching may occur. In four to six weeks the eruptions disappear without a trace.

Pityriasis rosea is treated with sulfanilamides, antibiotics, and antipyretics when fever and malaise are present. Externally it is treated with inert powders, mash, and corticosteroids in the form of ointments. Prolonged bathing should be avoided.


Mashkilleison, L. N. Chastnaia dermatologiia. Moscow, 1965.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
These six classes of erythemato-squamous diseases include pityriasis rubra pilaris, seborrheic dermatitis, psoriasis, lichen planus, chronic dermatitis, and pityriasis rosea. Biopsy is usually important in diagnosing these diseases.
All the patients attending the Dermatology Outpatient Department were screened and patients with pityriasis rosea were enrolled.
Only one case each of lichen striatus, pityriasis rubra pilaris and pityriasis rosea was reported of which onychoschizia of fingernail was observed as the only change in all these cases.
Pityriasis rosea (PR) is a self-limiting exanthematic disease, due to an endogenous reactivation of HHV-6 and/or HHV-7.
Piccirillo, "Borrelia infection and pityriasis rosea," Acta Dermato-Venereologica, vol.
Papatheodorou et al., "Detection of human herpesvirus 8 in the skin of patients with pityriasis rosea," Acta Dermato-Venereologica, vol.
The first vignette is with a patient (Nigel) who thinks he has pityriasis rosea and knows more about it than the doctor having consulted Google and NHS Direct.
Children your age sometimes have what is known as pityriasis rosea (pit-ur-EYE-eh-sis roe-ZAY-uh), an itchy rash of small oval pink patches probably caused by a virus.
I saw a very healthy toddler today with a condition called pityriasis rosea. It has a very spectacular rash.
FF, Newtown A THE condition you describe sounds typical of pityriasis rosea - a condition for which the cause of is not known.
Pityriasis rosea is a more likely culprit - this is a common skin condition in children and easily confused with ringworm.