Primary symptoms of juvenile polymyositis
Susan was unlike any other child around her in her younger years. However, she would feel weak and sometimes excruciating pain in her muscles.
The muscles mostly affected by JPM include the thigh, stomach, arm, and neck. However, other muscles around the body could also hurt. In some patients, swallowing is difficult as the esophagus becomes inflamed, and they can also experience muscle pain and bowel difficulties.