| The characteristic muscular inflammation of dermatomyositis is similar to that seen in the related disorder polymyositis. |
| Electromyography is indicated in patients with motor unit disorders, such as polymyositis, myasthenia gravis or amyotrophic lateral sclerosis. |
| Provisional arrangements had been made for electromyography and muscle biopsy, in case she had polymyositis. |
| Other diseases related to RA that may cause pulmonary fibrosis are systemic lupus erythematosus, polymyositis and dermatomyositis, Sjogren's syndrome, scleroderma and others. |
| The authors explained that it wasn't myasthenia gravis, or Lou Gehrig's disease, or polymyositis, and not carnitine deficiency. |
| The three main disorders in this group are dermatomyositis, polymyositis, and inclusion body myositis. |
