title: Diagnosing myalgic encephalomyelitis.
abstract: The diagnosis of myalgic encephalomyelitis can be difficult, particularly if laboratory evidence of infection is absent. This study compares the clinical presentation of patients with and without such evidence. Possible criteria for making a firm clinical diagnosis are discussed.
authors.forename: J
authors.initials: J
authors.lastname: Zala
mesh_terms: D015673:Fatigue Syndrome, Chronic / Q000175:diagnosis*; D006801:Humans