Occult onset of the disease. Most of myasthenia gravis onset, before attending a history sometimes for several months, children and youth who dermatomyositis more acute onset, only a few weeks treatment. A small number of patients because of muscle-ache and treatment. The inclusion body myositis disease can be as long as several years and attendance. Can occur at any age, women slightly in the majority. Some cases of attacks before the precursor symptoms, such as irregular fever, Raynaud's phenomenon, joint pain, headache, malaise and weakness, and so on. Most of the incidence was slow onset, with a small number of acute or subacute onset. Muscle and skin are the two main symptoms of the disease, skin lesions are often in the first few weeks to several years muscle disease, a small number of first myopathy, followed by skin lesions, some patients with muscle and skin disease at the same time. Fever: The patient may have irregular fever, fever may be the beginning of this disease symptoms, also in the development of the disease in the course, often irregular low heat, in acute cases of heat can be higher, about 40 percent of cases are Fever.
