Veteran actor Arun Bali, who has appeared in films such as '3 Idiots', 'Kedarnath', and 'Panipat', among others, has been diagnosed with Myasthenia Gravis, a rare long-term neuromuscular disease. Bali is a highly respected actor in the industry. The actor has been admitted to Hiranandani Hospital, according to a report released by ETimes.