Answer BOF 2.30

 

   

Home
Best of Five 1
Best of Five 2
Best of Five 3
BOF( Guest )
Advanced BOF(part 2 BOF)
PACES
MRCP theory examination topics
Books for MRCP
MRCP Courses
EMQS
OSCEs
Recommended Reading
Authors
Forum
Links
ydr search engine
Open Source
FAQ
Privacy Policy
Contributions

 

amazon astore

ACES for PACES

Medical Revision

 

 

 

Google
Web ydr.org.uk
acesforpaces.com medicalrevision.org

BOF: 37 (2.30)

A 35-year-old Japanese male presents with anterior uveitis. There is a history of recurrent oral ulceration and he has also had ulcers on his scrotum that have resulted in scarring.

To further investigate the patient’s condition a 20 G needle is inserted into the skin of his forearm. A positive result in this test is:

a)      A blister appearing at the site if injury in 24-48 hours

b)      A weal appearing at the site of injury immediately

c)      Multiple petechiae appearing at the site of injury within 5 minutes

d)      A papule or pustule appearing at the site of injury within 24-48 hours

e)      An erythematous nodule appearing at the site of injury within 24-48 hours

Answer:

d)

The clinical features suggest that the patient has Behcet’s disease. In this condition pathergy is often demonstrable. Pathergy refers to an excessive inflammatory reaction to non-specific injury. In a positive test, insertion of a 20 G needle into the skin of the forearm results in a papule or pustule within 24-48 hours.

 

Up

 

Up ]