By Jamie Roberts Amy Schumer has revealed she has been diagnosed with a rare health disorder after trolls had criticised her appearance. The comedian and actress, 42, opened up on her newfound condition and said it was speculation about her appearance and “puffy face” that led to her getting a doctor’s opinion. She revealed she has Cushing’s syndrome in Friday’s edition of Jessica Yellin’s News Not Noise newsletter. According to the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), Cushing’s syndrome is a “disorder that occurs when your body makes too much of the hormon…