Dermatomyositis
Dermatomyositis is a rare disease that causes a skin rash and muscle weakness. The skin rash can present reddish to purplish, dusky discoloration and swelling of the eyelids, particularly the upper eyelids (heliotrope rash). A red rash may also appear on the chest, shoulder, neck or back. Affected individuals may develop pinkish purplish papules over the joints of the hands (Gottron papules) and ragged cuticles with associated nailfold redness.