Aug 10, 2022 · Polymyositis (pol-e-my-o-SY-tis) is an uncommon inflammatory disease that causes muscle weakness affecting both sides of your body. Having this condition can make it difficult to climb stairs, rise from a seated position, lift objects or reach overhead. Polymyositis most commonly affects adults in their 30s, 40s or 50s.

Dermatomyositis (DM) and polymyositis (PM) are immune-mediated myopathies, characterized by the shared features of proximal skeletal muscle weakness and evidence of muscle inflammation [1-4]. DM, unlike PM, is associated with a variety of characteristic skin manifestations.

These diseases cause swelling and tenderness in the muscles (polymyositis) and sometimes the skin (dermatomyositis). The disease causes weaknesses in the arms and legs. Both Polymyositis and dermatomyositis have symptoms in common with sclerosis or sometimes lupus.

May 1, 2024 · Dermatomyositis and polymyositis are two types of immune-mediated muscle disorders that fall under the umbrella of inflammatory myopathies. Dermatomyositis is more likely to develop...

Dec 11, 2024 · Two specific kinds are polymyositis and dermatomyositis. Polymyositis causes muscle weakness, usually in the muscles closest to the trunk of your body. Dermatomyositis causes muscle weakness, plus a skin rash. Other symptoms of myositis may include: Doctors may use a physical exam, lab tests, imaging tests and a muscle biopsy to diagnose myositis.

May 11, 2022 · Dermatomyositis is a form of polymyositis that affects your skin in addition to your muscles. See your provider right away if you experience any symptoms of dermatomyositis. Some cases take months to develop, but dermatomyositis can develop quickly.

May 18, 2023 · Polymyositis can be associated with a characteristic skin rash and is then referred to as "dermatomyositis." Dermatomyositis in children is referred to as juvenile dermatomyositis. "Amyopathic dermatomyositis" is the term used to describe people who have skin changes compatible with dermatomyositis but do not have diseased muscle involvement.

Dermatomyositis is an idiopathic inflammatory myopathy characterised by skeletal muscle weakness and skin changes. Who gets dermatomyositis? Dermatomyositis is uncommon, with an annual incidence of 0.1-6 per population of 100,000.

Polymyositis and dermatomyositis are autoimmune diseases that cause inflammation of the muscles, most commonly the upper arms and thighs, resulting in weakness. Polymyositis affects mainly the muscles while dermatomyositis can cause skin …

Polymyositis and dermatomyositis are the most common. Depending on the type, other symptoms can include: There may be times when your symptoms are better than at other times. If a GP thinks you have myositis, they will do a blood test and refer you to a specialist. The specialist may do more tests, including: