Dermatomyositis is an autoimmune disease that affects the skins and the muscles. The female: male ratio is of 2:1, the peak onset frequency being registered between 50 and 60 years of age.
Key Clinical Symptoms and Signs:
- periorbital lavender-coloured erythema, with or without edema;
- Gottron’s Papules – on the dorsolateral side of the joints, especially metacarpophalangeal and interphalangeal joints;
- the symmetric muscular strength decrease in the proximal muscles at the level of the scapulohumeral and coxofemoral muscles.