That is often what happens with an autoimmune disorder called masticatory muscle myositis (MMM) that affects the jaw muscles, causing pain and dysfunction. Swollen, painful masticatory (chewing) muscles and an inability to open the mouth (trismus) are clinical signs of the disorder.
Alan Roger Mulally (born August 4, 1945) is an American engineer, business executive, and former President and Chief Executive Officer of the Ford Motor Company. He retired from Ford Motor Company on July 1, 2014.
Mr. Ford retired as active head of the Ford Motor Company in 1918, at the age of 55, turning over the presidency to his son, Edsel, and announcing his intention of devoting himself thereafter to the development of his farm tractor, the Fordson, and to the publication of his weekly journal, The Dearborn Independent.