It doesn't really present with any unique symptoms: abdominal pain, headaches, muscular pain, fevers, low blood pressure.
它并没有真正出现任何独特的症状：腹痛、头痛、肌肉疼痛、发烧、低血压。
英语百科
Myalgia
（重定向自Muscular pain）
Myalgia, or muscle pain, is a symptom of many diseases and disorders. The most common causes are the overuse or over-stretching of a muscle or group of muscles. Myalgia without a traumatic history is often due to viral infections. Longer-term myalgias may be indicative of a metabolic myopathy, some nutritional deficiencies or chronic fatigue syndrome.