Dangal actress Suhani Bhatnagar recently died of dermatomyositis, which is a rare inflammatory disease. We tell you all about dermatomyositis that affects the muscles and the skin. The sudden death of actor Suhani Bhatnagar, a 19-year-old actor seen in popular Bollywood film Dangal, due to dermatomyositis, has put the spotlight on this rare inflammatory disease….