The signs and symptoms of dermatomyositis can appear suddenly or develop gradually over time. The most common signs and symptoms include:  Skin changes. A violet-colored or dusky red rash develops, most commonly on your face and eyelids and on your knuckles, elbows, knees, chest and back. The rash, which can be itchy and painful, is often the first sign of dermatomyositis. Muscle weakness. Progressive muscle weakness involves the muscles closest to the trunk, such as those in your hips, thighs, shoulders, upper arms and neck. The weakness affects both the left and right sides of your body, and tends to gradually worsen. 
signs symptoms dermatomyositis can suddenly develop gradually time  common signs symptoms include:  skin changes  violet-colored dusky red rash develops  commonly face eyelids knuckles  elbows  knees  chest back  rash  can itchy painful  first sign dermatomyositis  muscle weakness  progressive muscle weakness involves muscles closest trunk  hips  thighs  shoulders  upper arms neck  weakness affects left right sides body  tends gradually worsen
dermatomyositis