Dermatomyositis Flashcards
1
Q
Features
A
proximal muscle weakness and characteristic skin lesions
2
Q
Skin changes
A
photosensitive
macular rash over back and shoulder
heliotrope rash in the periorbital region
Gottron’s papules - roughened red papules over extensor surfaces of fingers
3
Q
Is dermatmyositis senstivie to the sun?
A
Yes
4
Q
Diagnostic investigation
A
Muscle biopsy
5
Q
Other investigation findings
A
Raised CK
ANA positive
anti-synthetase antibodies
- Jo-1, SRP, anti-Mi2
6
Q
What antibodies would be positive
A
Anti Mi2
Anti Jo1
7
Q
Important screening if dermatomyositis confirmed
A
Malignancy screening e.g. ovarian, breast, lung
8
Q
Difference with dermatomyositis and polymyositis
A
Polymyositis does not exhibit skin changes, but still linked to malignancy
9
Q
Management
A
Steroids
