Muscular weakness, medically termed as myasthenia is a commonly found health disorder formed as a result of neurological, muscular or metabolic disorders. Causes leading way to the formation of muscular weakness vary from one person to another. Some among the common causes giving rise to the risk of this health disorder include stroke, dermatomyositis, hyperthyroidism and low level of potassium in blood. According to the cause, muscle weakness can affect single or group of muscles. Severe pain, cramping and atrophy are some main symptoms shown as a result of weakness. Depending upon the actual cause of problem, it may also accompany by other symptoms like ...