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Pityriasis Circinata

Pityriasis rosea is a self-limited skin disease of unknown etiology. It occurs most commonly in children and young adults.


  • In children, presentation can be atypical or inverse, and the course is typically milder. About one in four people with PR have mild to severe symptomatic itching.[en.wikipedia.org]
  • We present an unusual case of PR with frequent relapses during a period of 7 years. An 11-year-old white female patient presented with many pruritic erythematous oval lesions on her trunk.[pediatrics.aappublications.org]
  • Clinical Presentation The initial presentation of the disease is in most cases marked by the appearance of a herald patch, a well-circumscribed erythematous patch multiple centimeters in diameter with mild central clearing and depression.[pedclerk.bsd.uchicago.edu]
  • It is a common presenting sign in pityriasis rosea. It is called ... New Search Next[unboundmedicine.com]
  • Progression to the chronic lichenoid form occasionally occurs. pityriasis al ba a chronic condition with patchy scaling and hypopigmentation of the skin of the face. chronic lichenoid pityriasis a chronic brown to red-brown scaly macular eruption, seen[medical-dictionary.thefreedictionary.com]
  • UV therapy is most beneficial in the first week of the eruption. Oral erythromycin was effective in treating patients in one early trial, but a later study could not confirm these results.[en.wikipedia.org]
  • Pityriasis rosea • mild, common, self-limited eruption; may be due to human herpesvirus 7 (HHV-7) • suspected infectious etiology due to: occurrence primarily in adolescents and young adults in the spring and fall; recurrence is uncommon • eruption typically[dermweb.com]
  • PR-Like Eruptions PR-like eruption is a drug-induced skin rash with clinical features that strikingly resemble genuine PR and that often do not allow a clear distinction.[karger.com]
  • No prodromal symptoms, no subsequent eruption. [3] [16] Fungal culture positivity, hyphae on potassium hydroxide (KOH) prep.[online.epocrates.com]
  • Except for mild pruritus , pityriasis rosea is asymptomatic. The lesions disappear within two months, often causing postinflammatory hyperpigmentation or hypopigmentation.[amboss.com]
  • The peak incidence that we saw in April and May has been described in the literature. 6 Pruritus has been reported in 25% to 94% of patients. 6 , 7 Our finding of pruritus in 90% of patients fits into this broad range.[jamanetwork.com]
  • However, some dermatologists use prednisone (0.5-1 mg/kg/day for 7 days) in selected patients with severe pruritus, vesicular lesions, or the potential for significant postinflammatory hyperpigmentation, to suppress both pruritus and the exanthem.[dailyrounds.org]
  • More central and superiorly located, no skin cleavage line predilection, minimal to no pruritus. Spores and hyphae on KOH prep. Referenced Articles[online.epocrates.com]
Scaly Rash
  • Pityriasis rosea is a scaly rash that mostly affects young adults. It is relatively common and affects about 170 out of every 100,000 people in the community each year. The first sign is a patch of scales, usually on the trunk.[cochrane.org]
  • In susceptible people it changes to a pathogenic form called Malassezia furfur and produces a persistent depigmented scaly rash on the trunk.[medical_en.enacademic.com]
  • The scaly rash usually lasts between four to eight weeks and will disappear without treatment. The following are other common symptoms of pityriasis rosea. However, each child may experience symptoms differently.[chop.edu]
  • The scaly rash typically lasts between four to eight weeks and will disappear without treatment. Symptoms may include: itching (sometimes severe), and less comonly, body aches and fatigue. However, each child may experience symptoms differently.[texaschildrens.org]
  • , Judith Ogiez , Lucie Ogiez , Enagnon Kazali Alidjinou , Mouna Lazrek , Anny Dewilde , Didier Hober Abstract Pityriasis rosea (PR) usually presents as acute exanthema with oval erythematous-squamous lesions localized on the trunk, arms, and legs with[pediatrics.aappublications.org]
  • Pityriasis Rosea (PR) History:(i) Close contacts with similar eruptions: Mostly uncommon because most cases of PR are sporadic(ii) Medication intake: Could cause a similar exanthema(iii) Previous sexually transmitted disease(iv) Possible pregnancy(v)[dailyrounds.org]
  • Current evidence indicates that PR is a type of viral exanthema and the etiology may be possibly linked to human herpes viruses HHV6 and HHV7 [3].[odermatol.com]
  • Pityriasis Rosea (PR) Presents as a mild exanthema (a disease accompanied by a skin eruption) at any age (predominantly during second to fourth decade). Some suggest that the elderly and very young are immune.[hairscientists.org]
  • Papular lesions prevail in them, with a short period between the herald patch and the general eruption (4 d vs 14 d in adults), and a shorter duration of the exanthema (16 d vs 45 d).[wjgnet.com]
Papulosquamous Rash
  • On examination, he had a papulosquamous rash mainly on his trunk with a Christmas tree pattern [Figure 1] . The lesions were about 1-2 cm in diameter, scaly with raised margins.[e-ijd.org]
  • It is characterized by an initial herald patch, followed by the development of a diffuse papulosquamous rash. The herald patch often is misdiagnosed as eczema.[aafp.org]


  • The rash lasts for 6 to 8 weeks and then clears up without treatment.[medical-dictionary.thefreedictionary.com]
  • The condition usually resolves on its own, and treatment is not required. Oral antihistamines or topical steroids may be used to decrease itching.[en.wikipedia.org]
  • Orenstein Part of your psoriasis treatment Psoriasis Video Psoriasis Treatment Beauty Treatment Skin Psoriasis: Treatments Home Current Health Articles Seborrheic Dermatitis Pictures Treatment (Face Scalp Newborns) Seborrheic Dermatitis Pictures Treatment[enhance-itn.eu]
  • Treatment for Pityriasis Rosea Pityriasis rosea usually goes away without any treatment, leaving no trace. The rash lasts about 6 to 8 weeks before it disappears. In rare cases, it lasts for 2 weeks or longer than 8 weeks.[firstderm.com]


  • […] cause of the condition is not known, but it is linked to a viral infection Mild cases requires no treatment, although the application of corticosteroids and antihistamines on the rashes can help control itching and redness The disorder has a very good prognosis[dovemed.com]
  • Prognosis These spots, which may be itchy, last for 3-12 weeks. Symptoms rarely recur. Resources Organizations American Academy of Dermatology. 930 N. Meacham Road, P.O. Box 4014, Schaumburg, IL 60168-4014. (847) 330-0230.[medical-dictionary.thefreedictionary.com]
  • (Outcomes/Resolutions) The prognosis of Atypical Pityriasis Rosea is good.[dovemed.com]
  • Outlook (Prognosis) Pityriasis rosea often goes away within 6 to 12 weeks. It usually doesn't come back. When to Contact a Medical Professional Call for an appointment with your provider if you have symptoms of pityriasis rosea.[ufhealth.org]


  • Pityriasis rosea is a self-limited skin disease of unknown etiology. It occurs most commonly in children and young adults.[symptoma.com]
  • The etiology is unknown. Called also porcine juvenile pustular psoriasiform dermatitis, pseudoringworm.[medical-dictionary.thefreedictionary.com]
  • Etiology Clinical features Diagnostics Treatment[amboss.com]
  • ETIOLOGY A viral etiology for pityriasis rosea (PR) has been hypothesized based upon the following observations: PR is sometimes preceded by a prodrome. It occasionally occurs in small case clusters.[uptodate.com]
  • Even though PR was first described 200 years ago, the etiology and treatment of this condition is still elusive.[e-ijd.org]


  • Epidemiology References: [1] Epidemiological data refers to the US, unless otherwise specified. Etiology Clinical features Diagnostics Treatment[amboss.com]
  • Epidemiology Pityriasis rosea presents most often in patients between the ages of 10 and 35 years of age, though case reports indicate the presence of the disease in patients of all ages.[pedclerk.bsd.uchicago.edu]
  • However, we found several reports from Africa describing the clinical and epidemiological presentations of PR in African children and adults. 2 , 3 This study describes the clinical characteristics of PR in 50 black American children.[jamanetwork.com]
  • The cause of pityriasis rosea is uncertain but epidemiological (seasonal variation and clustering in communities) and clinical features suggest an infective agent.[bmj.com]
Sex distribution
Age distribution


  • Pathogenesis The pathophysiology of pityriasis rosea is poorly understood. The disease is believed to be viral in origin, given the way in which cases cluster in space and time as well as the low rate of recurrence.[pedclerk.bsd.uchicago.edu]
  • Pathophysiology Pityriasis rosea (PR) has often been considered to be a viral exanthem, a view supported by the condition’s seasonal occurrence, its clinical course, the possibility of epidemic occurrence, the presence of occasional prodromal symptoms[emedicine.medscape.com]
  • Etiology Pathophysiology The pathogenesis of pityriasis rosea is poorly understood.[dermatologyadvisor.com]


  • […] prognosis; the skin lesions generally resolve with no long-term complications Please find comprehensive information on Pityriasis Rosea regarding definition, distribution, risk factors, causes, signs & symptoms, diagnosis, complications, treatment, prevention[dovemed.com]
  • - 100% Emergent - ED Care Needed - Preventable/Avoidable - 0% Emergent - ED Care Needed - Not Preventable/Avoidable - 0% Primary diagnosis of injury 0% Primary diagnosis of mental health problems 0% Primary diagnosis of substance abuse 0% Primary diagnosis[codelay.com]
  • Prevention There is no known prevention. There are cases of other family members being affected but it is not considered contagious.[shcs.ucdavis.edu]
  • Can pityriasis rosea be prevented or avoided? You cannot prevent or avoid this condition. Pityriasis rosea treatment Treatment cannot cure pityriasis rosea, but medicine can help relieve the itching.[familydoctor.org]
  • Prevention There is no known way to prevent pityriasis rosea. It does not spread from person to person. It is not likely to recur. This rash does not leave permanent marks. However, some people with dark skin may have some skin discoloration.[winchesterhospital.org]

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Last updated: 2018-06-22 02:26