The main symptoms include several kinds of skin rash along with muscle weakness in both upper arms or thighs. Skin One form the rashes take is called "heliotrope" (a purplish color) or lilac, but may also be red. It can occur around the eyes along with swelling, but also occurs on the upper chest or back what is called the "shawl" (around the neck) or "V-sign" above the breasts and may also occur on the face, upper arms, thighs, or hands. Another form the rash takes is called Gottron's sign which are red or violet, sometimes scaly, slightly raised papules that erupt on any of the finger joints (the metacarpophalangeal joints or the interphalangeal joints). Gottron's papules may also be found over other bony prominences including the elbows, knees, or feet. All these rashes are made worse by exposure to sunlight, and are often very itchy, painful, and may bleed. If a person exhibits only skin findings characteristic of<unk> , without weakness or abnormal muscle enzymes, then he or she may be experiencing amyopathic<unk>  (ADM), formerly known as<unk>  sine myositis". Muscles People with<unk>  experience progressively worsening muscle weakness in the proximal muscles (for example, the shoulders and thighs). Tasks that use these muscles: standing from sitting, lifting, and climbing stairs, can become increasingly difficult for people with<unk> . Other Around 30% of people have swollen, painful joints, but this is generally mild. In some people, the condition affects the lungs, and they may have a cough or difficulty breathing. If the condition affects the heart, arrhythmias may occur. If it affects the blood vessels in the stomach or intestines, which is more common in juvenile<unk> , the people might vomit blood, have black tarry bowel movements, or may develop a hole somewhere in their GI tract. File:Dermatomyositis2.Gottron's papules on finger joints File:Dermatomyositis5.Gottron's papules on the elbows of a person with juvenile<unk>  File:Dermatomyositis6.Gottron's papules File:Dermatomyositis8.Gottron's papules on a person with juvenile<unk>  File:Dermatomyositis7.Gottron's papules in severe case of juvenile<unk>  File:Dermatomyositis9.Heliotrope with swelling around the eyes File:Dermatomyositis10.Heliotrope File:Dermatomyositis14.Facial rash File:Dermatomyositis16.Severe rash on the hands, extending up the forearm File:Dermatomyositis15.Forearm rash
Dermatomyositis
Scleroderma
Inclusion body myositis
Polymyositis
Scleromyositis
Dermatopolymyositis
Trichinosis
Juvenile dermatomyositis