Y5 - Erythema Nodosum Flashcards
1
Q
def
A
a common cutaneous hypersensitivity reaction consisting of red tender nodules commonly located over the shins
2
Q
what symptoms might be present with EN
A
fever
arthalgia
3
Q
epi
A
common
young adults
women>men
4
Q
what is EN associated with
A
pregnancy and lactation
5
Q
aetiology
A
variety of immunological triggers
6
Q
causes of EN
A
1 idiopathic 2bacterial -streptococcal infection -TB (tropical countries) 3 others -IBD -sarcoidosis
7
Q
what condition is EN associated with
A
IBD
EN is most common cutaneous manifestation
8
Q
risk factors
A
streptococcal infection
sarcoidosis
TB
oral contraceptives
9
Q
history
A
acute onset red and tender nodules on the shins
nodules on other skin areas
red eyes (sarcoidosis)
fever and joint pain
10
Q
what eye condition is associated with EN
A
uveitis
11
Q
investigations
A
1 bloods -FBC (WBC and ESR are elevated) 2 anti-streptolysin-O (ASO) titre -elevated in streptococcal infection 3 PPD skin testing -positive in TB
12
Q
how is EN diagnosed
A
clinically
13
Q
who does EN commonly affect
A
young women (may be pregnant)
