Nemaline myopathy
（重定向自Rod myopathy）
![An example of muscle cells with rods. The rods have been stained red and are located on the inside of the plasma membrane.](/Images/godic/202502/07/Biopsy_nemaline_myopathy_gomori4751.jpg")
![This is a simple example of a healthy sarcomere.](/Images/godic/202502/07/page1-220px-Normal_Sarcomere.pdf4751.jpg")
![Example of a sarcomere with nemaline rods. These rods make it harder for the sarcomere to contract.](/Images/godic/202502/07/page1-220px-Nemaline_myopathy_sarcomere.pdf4751.jpg")
Nemaline myopathy (also called rod myopathy or nemaline rod myopathy) is a congenital, hereditary neuromuscular disorder with many symptoms that can occur such as muscle weakness, hypoventilation, swallowing dysfunction, and impaired speech ability. The severity of these symptoms varies and can change throughout one's life to some extent. The prevalence is estimated at 1 in 50,000 live births. It is the most common non-dystrophic myopathy.