- Rash made worse by sunlight
- Heliotrope rash (heliotrope:
red to purple flower that turns toward
- Gottron's papules
(raised violaceous scaly eruption on knuckles
- Thickened, irregular eponychia.
- Proximal muscle weakness
- Weakness of neck flexors
- EMG (spontaneous fibrillation)
- muscle biopsy
(muscle necrosis and phagocytosis)
Immunosuppression: Steroids first.
Consider methotrexate, azathioprine if
unresponsive or intolerant to steroids.