You can now easily shop in multiple currencies, view your order total (including shipping fees, customs tariffs and taxes) at checkout and be assured the total is guaranteed at the exchange rate set when order is placed, with no additional payment required upon delivery of your order.ou can now easily shop in multiple currencies, view your order total (including shipping fees, customs tariffs and taxes) at checkout and be assured the total is guaranteed at the exchange rate set when order is placed, with no additional payment required upon delivery of your order.
Muscle weakness, or myasthenia, is a decrease in strength in one or more muscles. It is a common symptom of muscular, neurological and metabolic disorders. Muscular diseases, such as muscular dystrophy and dermatomyositis (disorder characterized by muscle inflammation), are common causes of muscle weakness.
Muscle weakness caused by myasthenia gravis worsens as the affected muscle is used repeatedly. Because symptoms usually improve with rest, your muscle weakness may come and go. However, myasthenia gravis symptoms tend to progress over time, usually reaching their worst within a few years after the onset of the disease.