Abstract
Chronic Fatigue Syndrome (CFS), also known as myalgic encephalomyelitis
(ME), is a complicated disease characterized by extreme fatigue of at
least six months duration. It is necessary to rule out the organic cause
of CFS in the paediatric patient in order not to overlook the
preventable or the treatable condition. In our case report we present a
case of a patient with a surprising origin diagnosed by cardiopulmonary
exercise testing.