Christina Applegate Tears Up Recalling First Learning of Her MS Diagnosis

Christina Applegate tearfully recalls the moment she learned of her multiple sclerosis diagnosis. In a rare interview on 'Good Morning America,' the actress and Jamie-Lynn Sigler open up about their lives since being diagnosed with the autoimmune disease. Christina says her MS diagnosis was discovered after she was unable to walk on her own while filming the final season of her Netflix show, 'Dead to Me.'