In most myopathies, weakness occurs primarily in the muscles of the shoulders, upper arms, thighs, and pelvis (proximal muscles). In some cases, the distal muscles of the hands and feet may be involved during the advanced stage of disease. Other typical symptoms of muscle disease include the following: 1  Aching. 2  Cramping.lthough symptoms depend on the type of myopath y, some generalizations can be made. Skeletal muscle weakness is the hallmark of most myopathies, with some noticeable exceptions, such as myotonia and paramyotonia congenita.
Quick Answer. There are approximately 470 known species of shark in the world, but it's impossible to count the exact number of individual sharks on the planet. World Wildlife Fund estimates that more than 100 million sharks are killed each year for their fins. Continue Reading.
How Many Types of Penguins are There. According to the International Penguin Conservation Working Group (IPCW), there are 17 types of penguins in this world. Some people argue that there are 20 species of penguin by counting the subspecies of Rockhopper penguins as a different species. You need to remember these types.