A Study Of Remote Voice Analysis Tool For Diagnosing And Monitoring ME/CFS

Inclusion Criteria: * Diagnosis of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) verified by an ME/CFS specialist. * Ability to complete study questionnaires and provide voice samples using a smartphone application. * Consistent access to a smartphone or tablet with iOS or Android operating systems, or a laptop. Exclusion Criteria: * No diagnosis of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS); "Chronic Fatigue Syndrome" not verified by an ME/CFS specialist. * Lack of consistent access to a smartphone or tablet with iOS or Android operating systems, or laptop. * Known dementia or other neurodegenerative disorder prominently affecting cognition or speech patterns. outside of ME/CFS * Known history of voice disorder either primary or secondary to neuromuscular or other pathology outside of ME/CFS * Known clinically significant heart failure or greater than moderate pulmonary hypertension.