31 - Pityriasis Rosea

Question 1

PR is most common in

Answer 1

Teenagers and young adults

Question 2

PR is currently thought to be related to

Answer 2

Primary infection or reactivation of HHV-6 and/or HHV-7

Question 3

Herald patch typically remains isolated on average for _____ in adults and _____ in children

Answer 3

2 weeks

4 days

Question 4

Consists of a single episode of relapse within 1 year of the initial episode

Answer 4

Relapsing form

Question 5

Relapsing vs classic PR

Answer 5

Relapsing - lack a herald patch, are shorter lived, consist of fewer and more localized lesions than the initial eruption

Question 6

Last for greater than 12 weeks without interruption

Answer 6

Persistent form

Question 7

Persistent vs classic PR

Answer 7

Persistent - oral manifestations are thought to be more common

Question 8

The secondary eruption usually occurs in crops every few days over the course of _____ where it reaches its maximum intensity

Answer 8

2 weeks

Question 9

Most common form of mucosal lesions

Answer 9

Ulcerations

Question 10

Often limited to 1 truncal site

Answer 10

Localized PR

Question 11

Does not cross the midline

Answer 11

Unilateral PR

Question 12

Women who develop PR during pregnancy, particularly during the _____ trimester, should be followed carefully for the development of adverse events

Answer 12

Third

Question 13

Reservoir of HHV-6 and HHV-7 and the usual mode of transmission

Answer 13

Saliva