Pityriasis rosea: Difference between revisions

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{{Pityriasis rosea}}
'''For patient information, click [[Pityriasis rosea (patient information)|here]]'''
 
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==[[Pityriasis rosea overview|Overview]]==


==Overview==
==[[Pityriasis rosea historical perspective|Historical Perspective]]==
 
'''Pityriasis rosea''' is a [[skin disease]] marked by patches of pink, oval [[rash]].  Although its exact cause is unknown and its onset is not linked to food, medicines or stress, it is thought that this essentially non-contagious condition is set off by a [[virus]].  Pityriasis rosea can affect members of either sex of any age. However, it is most common in females and those between the ages of 8 and 35.  Symptoms only recur in 3% of the affected.
 
== Diagnosis ==  


=== Symptoms ===
==[[Pityriasis rosea classification|Classification]]==
The symptoms of this condition include:


* Pink and flaky oval-shaped [[rash]], similar to [[ringworm]]
==[[Pityriasis rosea pathophysiology|Pathophysiology]]==
* A single "herald" patch may occur 1 to 20 days before smaller, more numerous patches of [[rash]].  It has also been known for the "herald" patch either not to be noticed or not to exist.  Other "herald" patches may appear as a cluster of smaller oval spots rather than a single patch.
* Often occurs in patches arranged in a triangular pattern, like a "Christmas tree"
* 25% of people with Pityriasis Rosea get mild to severe itching.  This fades as the [[rash]] develops
* May be accompanied by [[headache]], [[fever]], [[nausea]] and [[Fatigue (physical)|fatigue]]
* Other less common symptoms include reduction in sweat gland activity and the clearance of [[acne]]


These rashes are often found on the back, [[chest]] / [[stomach]], inner thighs, inner upper arms and inner forearms. It has been seen occasionally on the palms of the hands. Usually it does not affect the face; however a few blemishes may be found on the cheeks.
==[[Pityriasis rosea causes|Causes]]==


=== Physical Examination ===
==[[Pityriasis rosea differential diagnosis|Differentiating Pityriasis rosea from other Diseases]]==


==== Skin ====
==[[Pityriasis rosea epidemiology and demographics|Epidemiology and Demographics]]==


[[Image:pityriasis rosea.jpg|thumb|200px|left|Pityriasis rosea<ref>http://picasaweb.google.com/mcmumbi/USMLEIIImages/photo#5089143316040429010</ref>]]
==[[Pityriasis rosea risk factors|Risk Factors]]==
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== Treatments ==
==[[Pityriasis rosea natural history, complications and prognosis|Natural History, Complications and Prognosis]]==
Although there is no cure for pityriasis rosea, in most cases the condition goes away by itself without any treatment.  [[Ultraviolet light]] treatment or [[phototherapy]] may shorten the duration of the condition and may be prescribed for extensive and persistent cases of pityriasis.  [[Corticosteroid]] creams may also be prescribed to relieve the [[itching]].


Pityriasis rosea usually lasts between 8 to 10 weeks — the rashes disappear without scarring.  In people with dark complexions, however, hyperpigmented discolorations may last for several months afterwards.
==Diagnosis==
[[Pityriasis rosea diagnostic criteria|Diagnostic Criteria]] | [[Pityriasis rosea history and symptoms|History and Symptoms]] | [[Pityriasis rosea physical examination|Physical Examination]]| [[Pityriasis rosea laboratory findings|Laboratory Findings]] | [[Pityriasis rosea abdominal x ray|Abdominal X Ray]] | [[Pityriasis rosea CT|CT]] | [[Pityriasis rosea MRI|MRI]] | [[Pityriasis rosea ultrasound|Ultrasound]] | [[Pityriasis rosea other imaging findings|Other Imaging Findings]] | [[Pityriasis rosea other diagnostic studies|Other Diagnostic Studies]]


Although Pityriasis rosea may occur in more than one person in a household at a time, it is not thought to be highly contagious.
==Treatment==
[[Pityriasis rosea medical therapy|Medical Therapy]] | [[Pityriasis rosea surgery|Surgery]] | [[Pityriasis rosea primary prevention|Primary Prevention]] | [[Pityriasis rosea secondary prevention|Secondary Prevention]] | [[Pityriasis rosea cost-effectiveness of therapy|Cost-Effectiveness of Therapy]] | [[Pityriasis rosea future or investigational therapies|Future or Investigational Therapies]]


Dogs and bears are known to be afflicted by Pityriasis rosea quite frequently
== Case Studies ==
[[Pityriasis rosea case study one|Case #1]]


==See also==
==See also==

Revision as of 07:16, 9 May 2013

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2]

Overview

Historical Perspective

Classification

Pathophysiology

Causes

Differentiating Pityriasis rosea from other Diseases

Epidemiology and Demographics

Risk Factors

Natural History, Complications and Prognosis

Diagnosis

Diagnostic Criteria | History and Symptoms | Physical Examination| Laboratory Findings | Abdominal X Ray | CT | MRI | Ultrasound | Other Imaging Findings | Other Diagnostic Studies

Treatment

Medical Therapy | Surgery | Primary Prevention | Secondary Prevention | Cost-Effectiveness of Therapy | Future or Investigational Therapies

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Case #1

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